Which condition is required for viruses to reproduce

I found a helpful website that i used. mheonline. but body temp, climate.

They must enter the cell of another organism.

Viruses are nonliving, meaning they cannot reproduce with other viruses. It must have a host cell to inject it's DNA into in order to reproduce.

The structure of viruses allows them to succeed in their main mission—reproduction.

Viruses can only replicate themselves by infecting a host cell.

i think that d. wind is the answer.   i missed the question when i answered a. currents.

b.