A group of psychologists reviews the literature on the heritability of intelligence.
They conclude that most of the estimates indicate that percent of intelligence is due to genetics.

A 50% of intelligence is due to genetics

Explanation:

Various investigations carried out in the field of psychology show that between 40 and 50% of people's intelligence is determined by our genes, that is, people tend to inherit these percentages from their parents. While the other percentage is due to causes related to the environment in which the person is. The environment greatly influences how the person learns and can perform various things throughout his life.

While it is true that a percentage is determined by genes, this does not mean that as a baby grows it cannot enhance its capabilities. If from a young age the child is exposed to various situations where he can develop and learn more, he will be able to increase his intelligence. That is why today more emphasis is placed on exposing children at an early age to various types of activities where they can develop their potential and discover their interests.

answer; i believe that the correct answer is ( troxel v. granville);