Which of the following observations provides the best evidence that intelligence test scores are influenced by environment?
A. Identical twins raised apart are less similar in their intelligence scores than identical twins raised together.
B. The intelligence scores of children are positively correlated with those of their parents.
C. Identical twins are more similar in their intelligence scores than are fraternal twins.
D. The intelligence scores of siblings raised together are positively correlated.

The intelligence test score is a method to estimate the level of intellect a person has by contrasting it to the scores of the corresponding age group.

The correct answer is:

Option A. Identical twins raised apart are less similar in their intelligence scores than identical twins raised together.

This can be explained as:

Therefore, this option best depicts that intelligence test scores are influenced by the environment.

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A. Identical twins raised apart are less similar in their intelligence scores than identical twins raised together.

Explanation:

To determine if intelligence test scores are influenced by environment or not, the most telling evident from the available options is that identical twins raised apart are less similar in their intelligence scores than identical twins raised together.

This shows that despite their keen close similarities in their DNA, separating identical twins in different environment shows less similarities in their intelligence test scores compared to identical twins raised together.

c

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