Help me on this question and NO LINKSS

the first one

Explanation:

parasites are usually much more numerous than their hosts, but predators are usually less numerous than their prey.

Im not 100% sure its just what i think it is

I mostly think it's B, because parasites give effects on their host but not at the same time.

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added