Some One Please Help Me

[Faiza]

A man pushes a heavy load across a horizontal floor. What is the work done by gravity on the load?
a. The work depends on the weight of the load.
b. The work done by gravity is negative.
c. The work done by gravity is zero.
d. The work done by gravity is positive.

[Cyclovenom]

There's no need to post twice.

[Faiza]

the load is moving horizontally where as the gravitational force is vertical so i think its zero???????

[Cyclovenom]

the load is moving horizontally where as the gravitational force is vertical so i think its zero???????

Why is it 0? I gave you a clue on the other thread you started.