Kolb, Gibb, & Dallison (1999) studied the effect of enriched environments on rats of various ages. Based on their findings, which of the following is TRUE?

A) The enriched environment creates an increase of synapses for younger rats.
B) The enriched environment is detrimental to older rats.
C) The effect of the experience is dependent on the age of the rat.
D) The effect of the experience is detrimental, regardless of age.

C