A trip to the ocean can be a relaxing escape from the everyday pressures of life. A sailboat glistening on the horizon provides a mental escape to faraway places. The rhythm of the ocean beating against the sand is sedating music to a troubled mind. A slow, gentle breeze can relax your tensions. You should always be careful to avoid overexposure to the sun at the beach. Keeping in mind the paragraph above. Need help finding/writing the 2 sentences for the following,
A. The sentence that's the topic sentence of the paragraph.
B. The sentence that is unrelated to the topic and can be eliminated.

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.

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