Answer:
The answer is C. Your personal feelings about that topic.
Completely unrelated, but that is a great sentence, I want that painted as a quote on my wall.
Also, the punctiation seems right to me. But you might be able to use a ";" instead of a comma, im gonna check that real quick.
Swimming is a good sport it helps build muscle.
Some type of punctuation is required after 'sport.'
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The tense of the verb phrase "will invest" is D. future.