I NEED HELP QUICK. GIVING BRAINLIEST TO QUICKEST CORRECT ANSWER. The states that the firing rate of neurons in the auditory nerve matches the frequency of the sound wave.

A. frequency theory

B. place theory

C. volley principle

D. auditory principle

C. volley principle

Step-by-step explanation:

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )