Please help with the question below! FAST!

The first answer choice '3'

Explanation:

A, the first one which states that they will grow in proportion.

Explanation:

Natural selection would favor larger blood vessels, as shown by more babies birthed by mothers with big vessels surviving than those with smaller. Hope it helps :)

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.