Detailed A Memorandum of Agreement (MOA) outlines terms of cooperation, including restrictions on sharing intellectual property. A breach indicates the terms of the agreement were violated, compromising confidentiality or usage terms. Reference: CompTIA Security+ SY0-701 Study Guide, Domain 5: Security Program Management, Section: "Third-Party Risk Management"

According to the CompTIA Security+ SY0-701 Certification Study Guide, data subjects are the individuals whose personal data is collected, processed, or stored by an organization. Data subjects have certain rights and expectations regarding how their data is handled, such as the right to access, correct, delete, or restrict their data. Data subjects are different from data owners, who are the individuals or entities that have the authority and responsibility to determine how data is classified, protected, and used. Data subjects are also different from data processors, who are the individuals or entities that perform operations on data on behalf of the data owner, such as collecting, modifying, storing, or transmitting data. Data subjects are also different from data custodians, who are the individuals or entities that implement the security controls and procedures specified by the data owner to protect data while in transit and at rest.
ReferenceCompTIA Security+ SY0-701 Certification Study Guide, Chapter 2: Data Security, page 511

The best answer is C. Execute the file in a sandbox.
A sandbox is an isolated environment used to safely run suspicious files and observe their behavior without risking production systems. In this case, the analyst only used antivirus scanning, which may miss new, obfuscated, or previously unknown ransomware. By executing the file in a sandbox, the analyst could have observed malicious behaviors such as:
file encryption attempts
process spawning
registry changes
network beaconing
suspicious system modifications
This makes sandboxing a much better method for analyzing potentially malicious files than relying only on signature-based antivirus.
Why the other options are incorrect:
A). Review the file in a code editor.This might help in limited cases, but many malicious files are compiled, packed, or obfuscated. It is not a reliable primary analysis method.
B). Monitor the file connections with netstat.Netstat only shows network connections and would not fully reveal ransomware behavior, especially if the malware acts locally before making network connections.
D). Retrieve the file hash and check with OSINT.Hash reputation checks can help identify known malware, but they do not detect new or modified ransomware samples that do not yet appear in threat intelligence sources.
From the SY0-701 perspective, suspicious files should be analyzed using dynamic analysis in a sandbox to identify behavior that static tools may miss. That is why C is the best answer.

Detailed Access control lists (ACLs) allow administrators to fine-tune file permissions by specifying which users or groups have access to a file and defining the level of access. Reference: CompTIA Security+ SY0-701 Study Guide, Domain 3: Security Architecture, Section: "Access Control Mechanisms".

A honeytoken is a form of deception technology in which a fake asset (such as credentials, files, or database records) is planted in a system or network to detect unauthorized access or malicious activity. The fake password stored in a hidden spreadsheet, with monitoring for access, is a classic example of a honeytoken. It is not an interactive system (like a honeypot or honeynet) but rather a marker or tripwire intended to alert the security team to suspicious behavior. This method helps identify attackers and their methods early in the intrusion process.
Reference:
CompTIA Security+ SY0-701 Official Study Guide, Domain 1.1, "Deception and Disruption Technologies" CompTIA Security+ Exam Objectives: 1.1 CompTIA Glossary: "Honeytoken-A fictitious record or file intended to attract or identify unauthorized access."