Which of these is a characteristic of a virus? a) It invades a host organism and reproduces inside the host.
Ob) It can symbiotically be in a beneficial relationship.
O c) It can independently make its own proteins and survive.
d) It can grow on any surface provided there are nutrients.

the answer is a.

Explanation:

it attacks the owner and keeps reproducing inside the host.  

A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea.

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.

answer; synapse;