It's in B. Second-person point of view because of the use of you. The author is telling the story to you, and it's like he's making you feel that you're actually in the story, sensing and seeing all the things he's saying. Hope that made sense.
There are two neap tides per month because:
The moon and
sun are at a 90-degree angle to Earth twice a month.
Neap tides are also known as moderate tides. The lunar tide is partially cancelled when the moon and the
sun are at a 90-degree angle to Earth, or being at right angles. This event happens twice a month thus creating neap tides twice a month also.
