These factors contribute to the development of the population.This phenomena had happened in the last 2 centuries in all of the countries to help to improve the conditions of the life.
The fact that US citizens have a high per capita income (per capita = per person) allows them to consume a disproportionately large amount of products compared to the rest of the world. So I think the answer is B.
She inherited the hair color from only her mother because she has blonde hair like her mom and not her dad if she had gotten brown her then it would be from her dad but that’s not the case so she inherited from her mother
The answer to this statement is option A.