When a workstation automatically assigns itself an IP address that is not part of the DHCP lease pool, the system has most likely configured an APIPA (Automatic Private IP Addressing) address. According to CompTIA Core 1 (220-1201) networking fundamentals, APIPA addresses fall within the range 169.254.0.0
/16 and are assigned when a device cannot communicate with a DHCP server.
APIPA allows limited local network communication but does not provide access to the internet or network resources such as internal file shares that require routing or proper IP configuration. This explains why the workstation experiences connectivity issues.
A static IP address is manually configured and would not be automatically assigned. A DHCP address would come from the defined lease pool, which the technician has confirmed is not the case. A public IP address is assigned by an ISP and is not used directly on internal workstations.
CompTIA highlights APIPA as a key troubleshooting indicator of DHCP failure or network connectivity issues, making it the correct answer.
References:CompTIA A+ Core 1 (220-1201) Official Study Guide - IP Addressing, DHCP, and Troubleshooting

Large electrical motors can emit electromagnetic interference (EMI), which can disrupt wireless signals and prevent connectivity.
From CompTIA A+ 220-1101 Official Study Guide, Objective 2.4 - Wireless troubleshooting:
"Sources of external interference such as motors or other electrical equipment can disrupt wireless network connectivity." Verified Source:
CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 2: Networking Troubleshooting CompTIA Exam Objectives 220-1101, Domain 2.4

RAID 5 provides fault tolerance by distributing parity information across all drives, allowing the array to continue operating if one drive fails. In a three-drive RAID 5 set, a single disk failure puts the array into a degraded state where it can still function, but it is at higher risk because losing a second drive before recovery would cause data loss. Since the system reports Drive 3 has failed after a power outage, the best next step to minimize risk is to replace the failed drive immediately and start the rebuild. Rebuilding regenerates the missing data blocks onto the new drive using parity, returning the array to a protected state.
Option B leaves the array degraded and increases exposure to a second failure. Option C (firmware upgrade) is not a first response in an active failure scenario and can introduce additional risk or downtime. Option D (restore from backup) is typically used when the array is unrecoverable or multiple drives fail; it is more disruptive and unnecessary when RAID 5 can recover from a single-disk failure. Therefore, replacing the defective drive and triggering an array rebuild is the correct next step.

USB-C can carry a video signal because the USB-C connector supports Alternate Modes, most commonly DisplayPort Alt Mode, which allows the cable and port to transmit video (and often audio) to an external display. Many modern laptops, tablets, and phones use USB-C to output video to monitors, TVs, and docks.
In addition, some USB-C ports support Thunderbolt (depending on the device), which can also carry display signals along with data and power. This makes USB-C a versatile "single-cable" solution for charging, data transfer, and external display connectivity-an important concept in CompTIA A+ Core 1 when identifying connector capabilities and choosing the correct cable type.
The other options are not the best answer for standard video output in typical PC support scenarios. USB-A is a common data connector but does not natively carry a direct video signal like HDMI or DisplayPort (it would require an adapter that converts USB data to video). MicroUSB and MiniUSB were mainly designed for data and charging on older devices; while certain proprietary/legacy implementations existed, they are not the primary, modern, or expected video-carrying cable type in A+ objectives. Therefore, USB-C is the correct choice.

Wi-Fi assistance in mobile devices helps improve location accuracy by using nearby wireless networks to triangulate the device's position, even when GPS signals are weak (like indoors or in dense areas).
Reference: CompTIA A+ Certification Exam Core 1 Objectives - Domain 1.0 Mobile Devices - Objective
1.6: Troubleshoot common issues with mobile devices.