Answer:
a) False.
b) True.
c) Flase.
Step-by-step explanation:
a) An experiment proposes a possible explanation for a natural phenomenon.
False: An experiment doesn't propose possible explanation for a natural phenomenon. Actually, an experiment is designed to test already proposed explanations which normally are first developed in a more theorical context.
b) A experiment must be stated in a way that it can be tested by experiments.
True.
b) An experiment is a theory that has been validated many times by many scientists.
Flase: An experiment is no a theory, but a tool to test theories.