Please refer to the attachment for the explanation and answers to your questions.
1. The Heading 2. The inside address 3. The greeting also called the salutation 4. The body 5. The complimentary close and 6 . The signature line hope this helps!
The correct answer is:
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[A]: "a gerund phrase as the object of a preposition" .
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Note: This phrase is: "in serving others" .
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The gerund is: "serving" .
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The preposition is: "in" .
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a. Oral Sex - this still causes transfer of sexual fluids which can spread HIV. Technically if sexual fluids come in contact with toilet seats or clothing (underwear, etc), than HIV can be spread through those. But the chances of contracting HIV must be slim for those options since the fluids need to find a cut or an open blood vessel to enter.