Two Groups of Rats Were Tested on How Fast They

Two groups of rats were tested on how fast they could learn to run a maze. Group 1 was given enrichment (handled every day and had toys in the cage) , while Group 2 had no enrichment. The result of enrichment on speed of learning the maze was most likely ______.

A) not effective: both groups learned the maze at the same rate
B) inhibitory: the group with enrichment learned the maze at a slower rate
C) facilitating: the group with enrichment learned the maze at a faster rate
D) dependent on the type of rat studied