Final answer:
The acceptable attire to wear under a lifting suit is conventional underwear or a standard cotton or one-ply lifting brief.
Step-by-step explanation:
The acceptable attire to wear under a lifting suit is a. Conventional underwear or a standard cotton or one-ply lifting brief. It is important to wear comfortable and supportive underwear that allows for ease of movement during lifting exercises. Options such as multiple layers of underwear, girdles or tights, and swimming trunks or other rubberized undergarments are not recommended as they may restrict movement and hinder performance.