Peter is very precocious. at four he is already starting to read and has the vocabulary of a ten-year-old. peter’s parents are very academic. their house is filled with books and intellectual conversation. what is the most reasonable conclusion about the source of peter’s high intelligence?

The environment

Explanation:

The environment, as well as genetics, influence in children development. When a children grows up in an environment with many stimulus, it makes the child learn faster and adapt to this environment and develop in a faster way than their peers who don't grow up in such rich environment.

In the case of Peter, his parents are very academic and their house has many books and they are very intellectual people, therefore this can be a source of Peter's high intelligence.

i believe the answer is: returns on investments, no wages

people who belong in upper class society would most likely get there by obtaining multiple source of income, which a certain percentage of ownership for businesses. since most of them are job creator, they would most likely get their money from profit, not wages.