Final answer:
The word that matches with the word "variety" (meaning diversity) is a) multiplicity.
Step-by-step explanation:
The word that matches with the word "variety" (meaning diversity) is a) multiplicity.
When it comes to biology, "variety" refers to the concept of diversity or a range of different species or characteristics within a specific population or ecosystem. The term "multiplicity" also relates to the idea of having multiple or diverse elements or aspects.
For example, in a biological context, a diverse ecosystem with a variety of plant and animal species can be described as having "multiplicity." In contrast, options b), c), and d) do not accurately capture the meaning of "variety" in this context.