Why do today's high tides arrive about an hour later than yesterday's tides?
A. The tidal bulges include dry land as well as water, and dry land responds to the tidal forces more slowly.
B. The gravitational pull of the Sun on the tidal bulges slows their flow around Earth.
C. Friction between the surface of Earth and the water slow the water's motion.
D. The Moon rises and sets about an hour later every day, and the tides follow the Moon.
Answer: D
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