The Sun is essential to life on earth. Which of the statements is not true about the Sun's importance to life on the earth?
A)The Sun supports a livable temperature and climate.
B)The Sun supports the processes of plate tectonics.
C)The Sun keeps the earth in orbit because of its gravitational attraction.
D)The Sun supports the processes of the water cycle.

Sun is star present in Our Solar System around which Earth revolves. Earth is the third planet in Our Solar system and is the only planet on which life exists.

The existence of life on Earth is because of the Sun. It plays a very important role. Sun helps the earth to keep moving in a fixed orbit because of the gravitational attraction towards the Sun. It also supports the processes of water cycle on Earth by evaporating the water.

The climate and temperature conditions on Earth is due to the Sun only.

Plate tectonics is the theory which states that the Earth's outer shell is divided into several plates which glide over the mantle. There is no role of Sun to play in the process of plate tectonics.

Hence, the correct answer is Option B.