NTFS stands for New Technology File System and it is the preferred filesystem for Microsoft Windows OS since Windows NT 3.1 in 19931. NTFS replaced FAT (File Allocation Table) as the default filesystem for Windows because it offers many advantages over FAT, such as:
* Support for larger volumes and files (up to 16 exabytes)2
* Support for file compression, encryption, and permissions2
* Support for journaling, which records changes to the filesystem and helps recover from errors2
* Support for hard links, symbolic links, and mount points2
* Support for long filenames and Unicode characters2
FAT32 is an improved version of FAT that supports larger volumes and files (up to 32 GB and 4 GB respectively) and is compatible with older versions of Windows and other operating systems3. However, FAT32 still has many limitations and drawbacks compared to NTFS, such as:
* No support for file compression, encryption, and permissions3
* No support for journaling, which makes it vulnerable to corruption and data loss3
* No support for hard links, symbolic links, and mount points3
* No support for long filenames and Unicode characters3
APFS (Apple File System) is the default filesystem for macOS, iOS, iPadOS, watchOS, and tvOS since 20174.
APFS replaced HFS+ (Hierarchical File System Plus) as the preferred filesystem for Apple devices because it offers many advantages over HFS+, such as:
* Support for larger volumes and files (up to 8 zettabytes)4
* Support for file cloning, snapshots, and encryption4
* Support for space sharing, which allows multiple volumes to share the same storage pool4
* Support for fast directory sizing, which improves performance and efficiency4 ext4 (Fourth Extended Filesystem) is the default filesystem for most Linux distributions since 20085. ext4 replaced ext3 as the preferred filesystem for Linux because it offers many advantages over ext3, such as:
* Support for larger volumes and files (up to 1 exabyte and 16 terabytes respectively)5
* Support for extents, which reduce fragmentation and improve performance5
* Support for journal checksumming, which improves reliability and reduces recovery time5
* Support for delayed allocation, which improves efficiency and reduces metadata overhead5 References:
1: NTFS - Wikipedia 2: [NTFS vs FAT32 vs exFAT: What's the Difference?] 3: [FAT32 - Wikipedia] 4:
[Apple File System - Wikipedia] 5: [ext4 - Wikipedia] : NTFS vs FAT32 vs exFAT: What's the Difference? :
FAT32 - Wikipedia : Apple File System - Wikipedia : ext4 - Wikipedia

Logging into a user's account without their explicit permission is a violation of the acceptable use policy, which outlines the rules and regulations by which a user must abide while using a computer system. By logging into the user's account without their permission, the technician would be violating this policy.
Additionally, this action could be seen as a breach of confidentiality, as the technician would have access to information that should remain confidential.

The correct answer is D. Unattended installation. An unattended installation is a way of installing Windows
10 without requiring any user input or interaction. It uses a configuration file called answer file that contains the settings and preferences for the installation, such as the product key, language, partition, and network settings. An unattended installation can be performed by using a bootable USB flash drive or DVD that contains the Windows 10 installation files and the answer file1. This is the fastest way for the technician to install Windows 10 on a newly built computer, as it automates the whole process and saves time.
A factory reset is a way of restoring a computer to its original state by deleting all the data and applications and reinstalling the operating system. A factory reset can be performed by using the recovery partition or media that came with the computer, or by using the Reset this PC option in Windows 10 settings2. A factory reset is not a way of installing Windows 10 on a newly built computer, as it requires an existing operating system to be present.
A system restore is a way of undoing changes to a computer's system files and settings by using a restore point that was created earlier. A system restore can be performed by using the System Restore option in Windows 10 settings or by using the Advanced Startup Options menu3. A system restore is not a way of installing Windows 10 on a newly built computer, as it requires an existing operating system and restore points to be present.
An in-place upgrade is a way of upgrading an existing operating system to a newer version without losing any data or applications. An in-place upgrade can be performed by using the Windows 10 Media Creation Tool or by running the Setup.exe file from the Windows 10 installation media. An in-place upgrade is not a way of installing Windows 10 on a newly built computer, as it requires an existing operating system to be present.

System is the Control Panel utility that should be used to change the Path Environment Variable. The Path Environment Variable is a system variable that specifies the directories where executable files are located. To edit the Path Environment Variable, the technician should go to System > Advanced system settings > Environment Variables and then select Path from the list of system variables and click Edit.