In Order to Explain Principles of the Differences in Intelligence

Multiple Choice

In order to explain principles of the differences in intelligence between and within groups,the authors described a hypothetical tomato plant experiment.Based on this experiment it would be accurate to conclude that

A) if differences within groups are at least partly genetic in origin,then differences between groups are also genetic.
B) the heritability of the differences between groups is 100 percent even though the within-group difference is due entirely to the environment.
C) the variation within each group will result from genetic differences,but the between-group difference is explained by the different care received.
D) heritability estimates are valid in regard to group differences but not in regard to the variance found within a group.