Suppose a comet had a very eccentric orbit that brought it quite close to the Sun at closest approach and beyond Mars when farthest from the Sun, but with an average orbital distance of 1 AU. How long would it take to complete an orbit and where would it spend most of its time?

one year, mostly beyond earth's orbit

Explanation:

For a comet that has a very concentric orbit which brings it quite close to the sun and is at a distance of the AU of one thus making it around one year to orbit and would spend its time mostly in the beyond the orbit of the earth. As bodies that are closer to the sun move faster

It's probably because some types of violets are blue