heating of the oceans by the Sun gravitational pull of the Moon earthquakes on the ocean floor changes in wind direction
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which of the following is the major cause of tides?
Possibilities:
- heating of the oceans by the Sun
- gravitational pull of the Moon
- earthquakes on the ocean floor
- changes in wind direction

gravitational pull of the Moon