Final answer:
CSMA/CD is indeed the media access method used by both Ethernet (802.3) and Wi-Fi (802.11) networks.
Step-by-step explanation:
The correct answer is a. True. CSMA/CD (Carrier Sense Multiple Access with Collision Detection) is a media access method used by Ethernet (802.3) and Wi-Fi (802.11) networks. In CSMA/CD, devices on a network listen for traffic on the medium before transmitting to avoid collisions. If a collision does occur, devices participating in CSMA/CD detect the collision and take appropriate actions to resolve it.