What body part produces red bone marrow

The correct answer will be option-False.

Explanation:

A scientific investigation is performed to answer and explain the natural phenomenon by following scientific method.

In the scientific method, a proposed hypothesis is proposed in such a way that it can explain the question to a limited extent as well as can be tested through experiments. The experiments provide the results on the basis of which conclusions are made.

It is not necessary that hypothesis will be always true as it is considered an educated guess based on the previous work.  The experiment is performed to test the hypothesis and not to verify the hypothesis that it is true.

Thus, option-false is the correct answer.