Question

5. Which unit is used to measure astronomical distances
b) Light year
a) Leap year
d) Sound year
c) Century​

Answer 1

Light year is the unit to measure astronomical distance

Explanation:

Some of the most distant galaxies we can see are billions of light-years from us. Measuring in light-years also allows astronomers to determine how far back in time they are viewing. Because light takes time to travel to our eyes, everything we view in the night sky has already happened.

Answer 2

Light year is the unit used to measure astronomical distance