The Phenomenon of Adaptation Refers to

Multiple Choice

The phenomenon of adaptation refers to

A) the constantly changing sensitivity of photoreceptors to light in order to match illumination levels.
B) the capacity of many photoreceptor cells to send signals to a single cell.
C) the sensitization of photoreceptors to light levels that are constant.
D) increases in the number of rods in response to increased length of time in darkness.