Final answer:
A single-gang receptacle is a receptacle secured solely by a single screw, installed in a raised cover on a four-square box. Hence the correct answer is option B
Step-by-step explanation:
The correct answer for the given question is b) Single-gang receptacle.
A single-gang receptacle is a receptacle secured solely by a single screw. It is installed in a raised cover on a four-square box, which is a type of electrical junction box. The single-gang receptacle is designed to accommodate a standard three-prong plug, which can only be inserted in one way to ensure proper function of the three-wire system.