My biggest dream in life is to become a doctor. I love watching movies where doctors are happy about saving the lives of people. I will become a doctor to my grandfather who is sick. I will give him his medicine and check his body temperature, tool feel amazed at how doctors are being respected in our community. I want to become a doctor because I want to help my dearest grandfather fight cancer.

5. Which of the following is the topic sentence of the paragraph above?
a.I want to become a doctor because I want to help my dearest grandfather fight cancer cells in his body.
b. My biggest dream in life is to become a doctor.
c. I will become a doctor to my grandfather who is sick.​