1. the old man being weak could not walk properly from simple to compound

The old man was weak and could not walk properly.

Explanation:

Right now the sentence is simple form but if you add a clause then use a combining word it becomes compound. Same sentence worded differently more like cause and effect.

answer: b (host)

viruses use the cells of living organisms to reproduce. the cell which is used by virus is called as "host cell". it is a living cell in which virus multiplies, example bacteria, plant or an animal cell.

in this, the virus is a parasite, which uses host cell for its benefit (reproduction) by using the cell machinary of host cell.

the correct answer is self-disclosure must be voluntary.

hope i .

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