Arake acts as a machine by over which the force is applied. a. decreasing the applied force and increasing the distance b. increasing the applied force and increasing the distance c. decreasing the applied force and decreasing the distance d. increasing the applied force and decreasing the distance

A. decreasing the applied force and increasing the distance

Explanation:

As we know that machine is used to decrease the efforts so that we will get more output work by applying less amount of force.

As we know that the efficiency is defined as

so here if we give less energy and get more output then it means efficiency is good and that will act as a machine for us.

here if output work is more then it means that the distance moved will be more while the applied force is small so that input energy or efforts is small

so correct answer will be

A. decreasing the applied force and increasing the distance

i guess that visual aids present persuasive examples to what you are presenting, some factors would be theme (does it fit with the color, information, what you are presenting), size (can you see it, is it a big enough span of data/information), and overall look of the visual aid.

hope this : )