How much time will it take light moving at 300,000 km/s to reach us from the sun? The sun is 15,000,000 km from earth.

50 sec

Explanation:

Well we have the speed given as 300,000 km/s and distance given as 15,000,000 km. The time can be calculated by dividing the distance with the speed since

s = d/t

⇒t = d/s = 15,000,000 km/ 300,000 km/s

=50 sec

∴ t = 50 sec

Hope it answers your question!

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.