Just need help with number 4 and the last table, note that they both use the same picture but for the table the prime meridian is 12:00 PM and for number 4, B is 12:00 AM, so they are different values for the two questions, thank you very much.

Dall of the above all of the choices make sense

This is all you, but i can give you some topics that you could try. if it rained when you want to do something outdoors, it 'limits' that human activity. maybe you want to do an experiment that goes throughout the whole year and you have to have above freezing the entire year. this 'limits' your activity. i thought of those just off of the top of my head. something that gets to me that might be getting to you is you are thinking too hard about what to do. think simply, and if it is too simple, then bump it up just a little bit.