The most important thing to remember about colons is that you only use them after statements that are complete sentences.
Answer:
The answer is: Check out an organization's mission before donating.
Explanation:
It is not the others because professional fundrasiors don't make sense in this context. It is not a donators job to make sure everyone is paid. Also, an unknown organization emailing is not safe nor is it smart to donate to without research.
The underlined dependent clause <em>where the staff is intentionally rude </em>is called a relative clause, and it modifies the word restaurants. It refers to the word restaurants, it describes it in more detail.
