Answer:
C. Electrons flow from an outlet into a toaster, causing it to heat a
slice of bread.
Step-by-step explanation:
Current produces a heating effect. Current may be used to produce a heating effect in appliances such as the electric pressing iron, toaster, oven etc.
When electrons flow from an outlet into a toaster and the current thus obtained heats a slice of bread, current is said to flow from the outlet into the toaster.
Let us remember that current refers to the flow of electrons in a circuit.