16. The gravitational pull of the moon causes...

A ...high and low tides twice a day.

Correct! Correct!

Next!

B ...high and low tides once a day.

Incorrect! Incorrect

C ...high and low tides four times a day.

Incorrect! Incorrect

D   Sometimes A, sometimes B.

Incorrect! Incorrect

E   Sometimes B, sometimes C.

Incorrect! Incorrect

F   None of the above.

Incorrect! Incorrect

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