Question

a population is
oa. a group of closely-related organisms that lives in a particular area.
ob. a group of organisms comprised of similar species that lives in a particular area.
oc. the sum of all species living in a particular area.
od. a group of organisms belonging to the same species that lives in particular area.

Explanation:

A population is defined as a group of organisms of the same species living in a specific area. Option A mentions "closely - related organisms" which is too vague. Option B refers to "similar species" which is incorrect as a population is of the same species. Option C is about all species (which would be a community). Option D correctly states that it is a group of organisms of the same species in a particular area.

Answer:

D. a group of organisms belonging to the same species that lives in a particular area.