The planet Mercury is difficult to be observed most of the time because ________

A. It gets hidden behind Venus

B. It goes too far away from the Earth

C. It being too close to the Sun, gets hidden by the glare of the Sun

D. It cannot be seen at night as at that time no sunlight falls on it.

Answer: Option C

Solution(By Examveda Team)

The planet Mercury is often cited as the most difficult of the five brightest naked-eye planets to see. Because it's the planet closest to the Sun, it never strays too far from the Sun's vicinity in our sky.