When "Bright"and "Dull"strains of Rats Were Reared in Enriched Environments

Multiple Choice

When "bright"and "dull"strains of rats were reared in enriched environments designed to stimulate learning, __________ in terms of navigating a maze

A) the bright rats still outperformed the dull rats
B) the dull rats now outperformed the bright rats
C) both groups of rats performed equally well
D) both groups still did not perform as well as rats raised in a standard laboratory cage
E) the dull rats performed even more poorly than previously .