Usually tells the reader what the authors opinion is depending on their argument on the essay or book.
Its either A or C... sorry dnt really know which 1 but m sure its one of these..
Answer:
Application for the post of a Biology prefect.
I hereby apply for the post of a prefect in the school because I am explicitly good at Biology and also good in experimenting with living things. I love nature and also inquire to solve difficult task. I will be grateful if my request is favourably considered