How does a single fixed pulley, like the one seen here, help you do work?

Question

How does a single fixed pulley, like the one seen here, help you do work?

Responses
A changes the direction of the forcechanges the direction of the force
B increases the amount of applied forceincreases the amount of applied force
C decreases the amount of applied forcedecreases the amount of applied force
D allows you to pull the rope a shorter distance

Answer 1

D allows you to pull the rope a shorter distance

Answer 2

I can not see the picture but a single fixed pulley offers no mechanical advantage. It only allows change of direction of the force, for example you could use your weight to help pull down rather than lifting up.

Answer 3

Thank you for clarifying. In the context of a single fixed pulley, it does not increase or decrease the amount of applied force, but it allows you to pull the rope in a different direction, which can sometimes make the work easier to do.