This is a great start!
I would add something that you experienced in sixth grade that they could relate to.
Answer:
A. A trip to the ocean can be a relaxing escape from the everyday pressures of life.
B. You should always be careful to avoid overexposure to the sun at the beach.
Explanation:
A. Topic Sentence:
A topic sentence gives the idea of what the paragraph is about. This paragraph tells about how the senses are relaxed near or around the beach or sea or water area. So the first sentence summarizes this idea that a trip to the ocean can be a relaxing escape from the everyday pressures of life.
B. Not topic sentence.
Any sentence which is not related to the topic or does not have any element of the topic is a not topic sentence. In this paragraph the not topic sentence is You should always be careful to avoid overexposure to the sun at the beach. This sentence has no element of relaxation near or around the ocean . Instead it is an instruction that we should be careful while sunbathing.
I think the answer is D, Hope it helps!
Present of began is begin.
Past participle of I think you meant "begin" is begun.
