Light Year is related to

The correct answer is C. distance.

A light-year is a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 × 1012 km (nearly 6 trillion miles). It is used to measure distances to stars and other celestial objects outside the Solar System.

Energy is the ability to do work or cause change. It is measured in joules.

Speed is the rate at which an object moves in a given direction. It is measured in meters per second (m/s).

Intensity is the strength of something, such as light or sound. It is measured in decibels (dB).

I hope this helps! Let me know if you have any other questions.