What the correct answer

An independent clause is a group of words that contains a subject and verb and expresses a complete thought. An independent clause is a sentence.

here are a few examples of what an independent clause is;

The beach is a lot of fun, yet the mountains are better.

A group of us went to the movie, and we agreed it was enjoyable.

I went to the store, but I forgot to bring my shopping list.

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.