The correct option is C A – occupation; B - address
The niche of an organism is the functional role that it plays within an ecosystem. An ecological niche is the role and position a species has in its environment; how it meets its needs for food and shelter, how it survives, and how it reproduces. A species' niche includes all of its interactions with the biotic and abiotic factors of its environment.
“The ecological niche of an organism depends not only on where it lives but also on what it does. While habitat means the place/region where an organism lives.
By analogy, it may be said that the habitat is the organism's “address”, and the niche is its “profession” biologically speaking.
So, the correct answer is "A – Occupation; B – Address"