Final answer:
To find out what parents think about college tuition fees in the state, the most representative sample would be 50 parents of college students from the state. So the correct answer is Option B.
Step-by-step explanation:
In order to determine a representative sample when using random sampling, you want to select a sample that accurately represents the population you are studying. In this case, you want to find out what parents think about college tuition fees in the state. The most representative sample would be option b) 50 parents of college students from the state. This sample includes parents who are directly impacted by the college tuition fees in the state.