"All the interacting populations in an area" defines a biological community.
Answer: Option B
Step-by-step explanation:
Throughout biology, 'species' denotes each organisms of same kinds which are theoretically capable of breeding and developing fertile offspring under a natural conditions. A population is created by the representatives of an species living at a given region and also at the same time.
A biological (or biotic) culture or community is composed of all organisms living and communicating within a particular geographic region. The living organism in a community builds an ecosystem with its non-living or abiotic environment.