Respuesta :
The function prototype you provided has 3 parameter variables.
Explanation in Detail:
In a function prototype, the variables listed in the parentheses after the function name are the parameter variables for the function. These variables represent the values that will be passed to the function when it is called. In this case, the function has 3 parameter variables, all of which are of type double.
Therefore, the correct answer is C) 3.
It is important to note that a function prototype only provides information about the number, type, and order of the parameters that a function expects to receive, but it does not provide any information about the function's implementation or behavior. For example, the function prototype does not tell us what the function does with the parameter variables or what it returns.
To know more about parameter variables, visit: https://brainly.com/question/28557876
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