What does the place theory of pitch perception suggest? different amplitudes of the basilar membrane are sensitive to sounds of different waves. different portions of the basilar membrane are sensitive to sounds of different frequencies. different portions of the ear are sensitive to sounds of different decibels. different sections of the cochlea are sensitive to sounds of different frequencies?

Answer;
The pitch perception suggests that different portions of the Basilar membrane are sensitive to sounds of different frequencies.

Explanation; 
According to the place theory; different portions of the basilar membrane are sensitive to sounds of different frequencies.
The base of the basilar membrane responds best to high frequencies and the tip of the basilar membrane responds best to low frequencies. Therefore, hair cells that are in the base portion would be labeled as high-pitch receptors, while those in the tip of basilar membrane would be labeled as low-pitch receptors.

Ithink the answer is d.