D
Below is a question with multiple-choice answers. Choose the correct option based on your reasoning.

### Question:
A girl signals her friend by shining a flashlight on a mirror. Her friend can see the signal because

### Choices:
A. heat energy can be transferred from one object to another
B. mechanical energy can be transferred from one object to another
C. sound energy can be reflected from one object to another
D. light energy can be reflected from one object to another

### Answer:
