Answer:
The correct answer will be option-A.
Explanation:
Science is a branch of knowledge which explains the natural phenomenon or process of our surrounding nature. The branch tries to answer the scientific questions after the logical and sequential steps of the scientific methods are followed.
In a scientific method, to answer a scientific question, the scientific hypothesis is constructed which could be proved on the basis of experiments based on which results could be concluded.
Thus, scientist performs experiments to understand and answer the hypothesis, therefore, option-A is correct.