Parasites need a host. If a host tries to get rid of the parasite or kill it, then the parasite either has to leave the body or die.
She should make observations next.
If she doesnt make observations, it would be difficult to form a hypothesis and design an experiment, the result will more likely to be inaccurate too.
I believe that it consists of about 3 billion letters/base pairs
I Think the Answer
is D...Hopes this Helps <span />