Each voyager spacecraft was accelerated toward escape speed from the sun by the gravitational force exerted by jupiter on the spacecraft. (a) is the gravitational force a conservative or a nonconservative force?

Explanation:

For the force to be conservative one, the condition is that the curl of the force must be zero. In other words, the work done by the force is path independent  or does not depend upon the path.

Gravitational force is a central force and it does not depend on the path followed.

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 : )

the closer the planet is to the sun, the larger the gravity