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

### Question:
A student states that plants grow taller when grown in natural light than they do in artificial light. Which method is the best way to determine if the statement is fact or opinion?

### Choices:
A. conduct a controlled experiment
B. discuss the statement with other students
C. ask several teachers their thoughts
D. propose a scientific conclusion

### Answer:
