Answer:
The correct answer will be- A Biologist
Step-by-step explanation:
Science is a branch of study which deals with studying the natural process and events.
The branch has been categorized into three categories based on the aspect a scientist is dealing with:
1. one who studies chemical compounds is known as a chemist.
2. one who studies the physical process of nature is known as a physicist.
3. one who studies living organism or bio-organism is known as a biologist.
Thus, a biologist is the correct answer.