Question

what is a light - year? a. the distance that light can travel in one year b. a unit of measure that shows how much light is in one year c. the amount of time it takes for light to reach the sun d. the distance that a star travels in one year

Explanation:

A light - year is a unit of distance. Option A says it's the distance light travels in one year, which matches the definition. Option B is wrong as it's not about the amount of light. Option C is wrong because it's not about the time to reach the Sun (and the time for light to reach the Sun is about 8 minutes, not related to a light - year). Option D is wrong as it's not about the distance a star travels.

Answer:

A. The distance that light can travel in one year