Answer:
C.
Explanation:
Based on the information provided within the question it can be said that the one of the popssible reasons for this bimodality might be because private colleges and public colleges tend to differ in amount of tuition. Since they may differ in the amount then there is no way to focus on a single aspect since it will affect only one and not the other.
Answer: Validity and Reliability
Explanation: If a certain model of interview is structured to identify different types of disorders and it proves to be accurate, that means it has validity and reliability, meaning that it can be taken into consideration when trying to evaluate if a person classifies or not among the disorder clusters specified in such interview.
So they can match data together, or confirm different findings with more opinions.