Answer:
Both the first and the third answers are correct
Step-by-step explanation:
Weighting systems are worn by divers to help balance the buoyant or upward thrust movement of the water on equipment such as the diving cylinders carried along with the diver during the dive,
A quick release mechanism can aid in the emergency rescue of a diver by dropping the weight to increase the diver's buoyancy so as to rapidly rise to the surface
The weighting system arrangement is such that part or all of the weight could be removed to allow an immediate increase in the divers buoyancy
Therefore, both the first and the third answers are correct.