What does a machine change to make work easier? check all that apply. the amount of work done the amount of force applied the time needed to do the work the direction of a force the distance over which a force is applied

Answer
The direction of force.
The distance over which a force is applied.

Explanation
Work cannot be made easier by reducing the amount of work. this will be avoiding the work. 
Time does not make work easier but it is the measure of power in a machine. 
If the force is applied against the gravity then it would be more difficult than when it is applied towards the gravity. So direction of force can make work easier.
When the effort distance is increased the work becomes easier since work is given by the product of force and distance. So, distance over which the force is applied makes work easier.  

Ithink your answer is d