An object is in motion whena. you observe the object move. b. the object’s speed increases. c. the object’s displacement is greater than the distance traveled. d. the object changes position relative to a stationary reference point.

The answer is D.the object changes position relative to a stationary reference point.

Explanation:

increases it

one "light year" is the distance that light travels, through vacuum, in one julian year.   that's 365.25 days, of 24 hours each.