You are outside playing on a hot sunny day and are called into your home by your parents. a stone fence surrounds your yard. as you enter the gate, you touch the stones in the fence and notice how warm it is. you let your hand stay on the rocks of the wall for a few minutes. when you remove your hand and touch your face with it, you can feel the heat; the stones in the wall have warmed your hand. a) radiation b) conduction c) convection