Which of these is a characteristic of a parasite? A. It is a helpful organism. B. it lives inside or on a host. C. It makes its own food. D. It is always visible to the naked eye.

B it lives inside or on a host

Explanation:

that is the definition of parasite

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

i think its through the fallopian tube