(02.03 MC)

If the age of the middle layer of a rock sample is between 300 million years and 1 billion years, which of the following could be the age of the lowermost layer?

2 million years to 5 million years
900 million years to 1 billion years
1.5 billion years to 2.5 billion years
800 million years to 950 million years

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.