A pharmaceutical company runs an advertisement on TV, providing data that describe the way in which their own customer preference survey places their product ahead of their competitors' products. This claim is most likely:

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.