i need to kono why this app is so i get a add then i hav ea nohter add and there way to long. anyways 3 more weekds till summer. have a good one

Which of these describes how heat is transferred by convection* a. sunlight travels through space without the aid of fluids or solids. b. warm air rises and takes the heat with it, eventually, it cools and sinks c. air at the equator rises and sinks at the poles. d. air molecules touch the warm ground, heating them up *not conduction