Concerning Environmental Enrichment,which of the Following Research Results Was Reported

Multiple Choice

Concerning environmental enrichment,which of the following research results was reported?

A) Beneficial influences were limited to very early childhood.
B) Improved scores of crystallized and fluid intelligence have been reported.
C) Improvements were reported until children reached the age of 9 years.
D) Improvements were reported only after children reached the age of 15 years.