BCD's used with dry suits should fit so that_____________ is allowed for ___________.

The correct answer highlights the importance of fitting the buoyancy control device (BCD) properly to accommodate the unique needs of divers wearing dry suits. When using a dry suit, divers experience additional buoyancy and bulk due to the insulating layer and the trapped air within the suit. Therefore, it is essential that the BCD is fitted in a way that allows for this increased bulk. Proper fit ensures that the BCD can effectively manage buoyancy control during the dive without being restrictive or uncomfortable.

This concept is important because if the BCD is too tight, it could limit the diver's mobility and make it challenging to establish proper buoyancy. By allowing room for increased bulk, divers can adjust their buoyancy as necessary during the dive, thereby enhancing safety and comfort while underwater.