Final answer:
The term 'bucks' is defined appropriately in the context of a biology class, referring specifically to male deer as intended for the subject matter.
Step-by-step explanation:
When the statement is made, "When we talk about 'bucks' in this class we shall be referring to male deer," it is referring to a specific context for the term. In this scenario, the term 'bucks' is deliberately being narrowed to have a particular meaning relevant to the subject at hand—in this case, likely, a biology class where the term is being defined within the context of animal terms. Here, 'bucks' is a colloquial term often used to refer to male deer.
Therefore, the correct answer to whether the definition is appropriate is d) definition is appropriate. This definition is neither too narrow nor too broad; it precisely pertains to the context in which 'bucks' will be used in the class.