25pts The diagram shows the positions of the sun, moon and Earth during spring tides, when the high tides are at their highest and low tides at their lowest. What is it about these positions that causes these high and low tides?

The moon and sun are primarily responsible for the rising and falling of ocean tides, but, for any particular spot on Earth's surface, the height of the tides and their fluctuation in time also depends on the shape of your specific beach, the angle of the seabed leading up to your beach, plus your larger coastline and the prevailing ocean currents and winds.