Explanation:
The role of active cytotoxic T cells is to attack <u> </u><u>body cells that have been infected</u>
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Before viruses can reproduce, they must infect a host cell.
Viruses need a way to enter the body before they can infect a host cell.
Genetically engineered foods<span> are no different than natural foods, and therefore they don't need to be labeled or </span>regulated<span> any differently.</span>
<span>A. Redwood trees
K-selected species are living organisms that are usually larger than those in the r-selected species</span>
I think it’s a or c but I’m not good at these types of things