Final answer:
The correct step to ensure safety before using the electric shaver is to check the Safety Data Sheet (SDS).
Step-by-step explanation:
In this question, the subject being discussed is related to health and safety procedures. The situation involves shaving a new resident using an electric shaver, and the question is asking for the correct steps to follow before using the shaver. The options given in the question are to fill the sink with water, have the maintenance staff check the device, check the Safety Data Sheet (SDS), and get an extension cord.
The correct step to ensure safety is to check the SDS (Safety Data Sheet). SDS provides important information about the potential hazards associated with the product, including how to handle and use it safely. It contains information on the proper first aid measures and precautions to take in case of accidents or misuse.
Therefore, option c - check the SDS, is the correct step to take before using the person's electric shaver.