I would add:
In order to do this, I will first get people to put trees into the deserts. Once the deserts are fully planted with trees, I will ask construction workers to build homes. Families can move here and request to open shops if they wish.
Hope this helps!
The answer is A. I just took the quiz
A. affect
Affect can sometimes be a noun, but it is mostly used as a verb that describes some sort of change or difference.
On the other hand, the word effect is not an action nor verb; it is a noun that refers to the result of a cause.