The correct answer is D - Encryption to prevent man-in-the-middle and eavesdropping attacks.
WGU Cybersecurity Architecture and Engineering (KFO1 / D488) explains that while NFC is inherently short-range, it is still vulnerable to eavesdropping and man-in-the-middle attacks. Applying encryption ensures that even if communication is intercepted, the data remains protected and confidential.
Kerberos (A) is primarily for authentication within internal networks. Bluetooth restrictions (B) are unrelated to NFC. PDM (C) restricts device usage but does not directly protect NFC communication.
Reference Extract from Study Guide:
"Encrypting near-field communication ensures confidentiality and protects against interception and manipulation through man-in-the-middle and eavesdropping attacks."
- WGU Cybersecurity Architecture and Engineering (KFO1 / D488), Wireless and Mobile Security Concepts