when kevin started his car in the parking lot, he also turned on the radio to his favorite station. as he enetered the street next to the campus, he turned the radio up due to the increased background noise in the car. entering the highway, he again increased the volume until he could hear the music clearly. driving into the driveway at home, he saw his mother watering her roses in the front yard. "Kevin! Turn down that radio. We are going to be deaf before you are twenty five!" she instructed as he open the car door. he had not noticed how very loud the radio was until she mentioned it. Kevin had experienced
a. absolute threshold constancy
b. weber's law
c. sensory adaption
d. sensory deprivation
Is it A? any other opinions please