Question

sally made breakfast for the family on saturday morning. she put some bread in the toaster. when the bread popped up, sally grabbed the toast. ouch! thats hot! sally exclaimed. what was the source of the heat that made the bread hot? a burning b electricity c friction d light

Explanation:

A toaster is an electrical appliance. It converts electrical energy into heat energy to toast the bread. Burning usually involves a chemical reaction with oxygen (like in a fire), which is not the case here. Friction is the resistance between two surfaces in relative motion (e.g., rubbing hands), not relevant for a toaster. Light is not the source of heat for a toaster.

Answer:

B. electricity