Final answer:
The statement that a theory becomes a law when it has been known for a long time is false.
Step-by-step explanation:
A) True
B) False
When a theory has been known for a long time, it does not necessarily become a law. The distinction between a theory and a law in scientific terms is that a theory is a well-substantiated explanation of some aspect of the natural world that is based on a body of evidence, while a law is a statement that describes an observable phenomenon or pattern in nature.
Therefore, the statement is False.