In a Series of Studies by Meaney and Colleagues,rat Pups

Multiple Choice

In a series of studies by Meaney and colleagues,rat pups were randomly assigned to be raised by surrogate mothers who spent a lot of time licking and grooming (high LG) them or surrogate mothers who spent little time engaging in this behavior (low LG) .Rat pups raised by low LG surrogate grow up to be _____ fearful in novel situations,which can be attributed to a(n) _____ in DNA methylation.

A) less;increase
B) less;decrease
C) more;increase
D) more;decrease