If you can’t do an experiment to test an idea,

Choose the best answer from the options below:
A it is wrong
B it could still be right
C it is therefore correct
D you should come up with another idea in its place

D you should come up with another idea in its place

The best answer is D - you should come up with another idea in its place. If you are unable to test an idea through experimentation, it is important to explore alternative hypotheses or approaches that can be tested to validate or refute the initial idea. Simply not being able to conduct an experiment does not necessarily mean that the idea is correct or incorrect. Further investigation and development of alternative strategies are necessary in such cases.