Answer:
D.Non negtaive rational numbers.
Explanation:
Given
A store sells self serve frozen yogurt and weight of yogurt taken in ounces.
The function C(w) represents the cost , in dollars .
The given yogurt can be measured in gram or kilogram or ounces etc.
The quantity of yogurt can not be negative because quantity is always a positive number . So it can not be a negative number
The quantity is defined as the amount of any material or substance .
The quantity is always a positive number . It can not be negative value of a number.
Here, the quantity is taken in ounces so it is a positive number .
The quantity of any material can be natural number or positive rational number .
Hence,the domain for the function C(w) are non negative rational numbers.
An appropriate domain for the function would be non negtaive rational numbers .
Therefore, the correct answer is option D.