An impermeable layer of rock or sediment is termed a(n) in hydrogeologic contexts. A. unconfined aquifer B. aquitard C. confined aquifer D. unsaturated zone

answer; i believe the correct answer is (b) dutch van der linde

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.