Final answer:
The two chambers of the ear with receptors for equilibrium are the semicircular canals and vestibule. These organs work together to help maintain balance and spatial orientation.
Step-by-step explanation:
The 2 chambers of the ear with receptors for equilibrium are known as the semicircular canals and vestibule. The correct answer to the question is c) Semicircular canals and vestibule. The vestibule is the portion for equilibrium, composed of the utricle, saccule, and the three semicircular canals. On the other hand, the cochlea is the part of the inner ear that is responsible for transducing sound waves into a neural signal. It is important to note that the semicircular canals are specifically associated with detecting rotational movements and are filled with fluid which moves when the head rotates, aiding in balance and spatial orientation.