Answer:
The correct answer is - C. Spring tides
Explanation:
Spring tides are the highest tides that made in the case when the sun, earth, and the moon all three come in a line. This takes place before the full moon or new moon. The tides occur due to the gravitational pull of the sun and the moon.
The spring tides are the highest tides whereas neap tides are the smallest tides caused by the pull of the sun and moon together on earth.
I believe it is a 2:1 ratio of hydrogen to oxygen, because the way i learned was that carbon hydrogen and oxygen have a ratio of 1:2:1, respectively.