This is a mode of writing whose purpose is to convey information or to explain and establish the validity of an idea in a logical, clear, and concrete manner.

It is Expository Text

Explanation:

The objective of making an expository text is to provide the reader with real information since it is based on facts and proved and trustworthy data, it is normally used to informative or educational purposes since it can go from exposing events or definitions for real things from a direct and formal point of view to give instructions and follow steps in a process.

it would be d cause refers into the pargrapgh

answer: i am not sure but i think you should go for c

explanation: