Explanation:

A biome is a large naturally occurring community of flora and fauna occupying a major habitat, e.g., forest or tundra. It is characterized by its distinct climate, vegetation, and animal life. Option (2) 'Biome' correctly describes a large-scale ecological unit defined by its dominant plant forms and climate, encompassing multiple ecosystems. Option (1) 'Habitat' refers to the specific place or environment where an organism or a biological population normally lives. Option (3) 'Biomass' is the total mass of organisms in a given area or volume. Option (4) 'Biota' refers to all the living organisms (plants, animals, and microorganisms) of a particular region, habitat, or geological period. While a biome contains biota, it is a more specific term for a large-scale, climatically defined ecological region.