Which of the following statements about tides is correct?

Option 4 : The strong gravitational pull exerted by the sun and the moon on the earth’s surface cause the tides.

The correct answer is the strong gravitational pull exerted by the sun and the moon on the earth's surface causes the tides.

• The rhythmic rise and fall of ocean water twice a day is called tide.
• The strong gravitational pull extended by the sun and the moon on the Earth's surface causes the tides.
• Another factor is centrifugal force, which acts to counterbalance gravity.
• Together, the gravitational pull and centrifugal force are responsible for creating two major tide bulges on the earth.

 Thus, we can say that the above statements are correct.

• High tides help in navigation.
• It is high tide when water falls to the highest level and covers much of the shore.
• It is low tide when the water falls to the lowest level and recedes from the shore.