Answer:
What type of public transit does your family prefer to use?
Explanation:
A prior knowledge is a type of knowledge defined as existing knowledge in which the individual has already, before meeting new information.
Hence, in this case, the question of "What type of public transit does your family prefer to use" is a good example of question that will need prior knowledge to answer it, such that the person answering the question will just have recall their memory the type of public transit their family prefer to use.
However, questions such as Questions such as "How does public transit benefit the environment? " and "Which cities have the most efficient public transit system?" Will require research study to find out, as it deals with processing of data to reach conclusion.
Also, question like "How many of your classmates use public transit?" would need direct estimation from the available data.