Which of the following statements about the EU is true?

Answer is A

Explanation:

A.

Over 750 million people live in the member countries.

B.

People can move freely about member counties.

C.

It is the world’s second-largest economy.

D.

It has 27 member countries.

radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.