Why do we have two high tides per day?
A. About half of Earth's water must flow past more geological barriers, slowing it down.
B. The Moon and the Sun create separate tidal bulges, resulting in two high tides per day.
C. There are two tidal bulges, and the rotation of Earth carries us through both of them every day.
D. The rotation of Earth and the motion of the Moon around Earth drag both tidal bulges over us.
Answer: C
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