Please help, will mark brainliest

The answer should be 15 although its debatable. Many sources say different things but out of every source I looked at 15 was the only one mentioned from your answers. I thought it was 15 but before I answered I wanted to be correct

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.

the first settlers in north america were frim europe.

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