Question

according to \how to think like a researcher,\ a chapter from how to find out anything, one should begin research by asking answerable questions rather than open-ended questions. based on the guidelines in the text, which is an appropriate research question?
which state has the most days of nice weather in a year?
is a year-round school calendar a better option for students?
what is the most difficult thing about taking a trip abroad?
what is the average income of a dentist in the united states?

Explanation:

An answerable research question has a concrete, measurable, and verifiable answer.

1. "Which state has the most days of nice weather in a year?" is subjective because "nice weather" is not defined.
2. "Is a year-round school calendar a better option for students?" is subjective, as "better" depends on individual perspectives.
3. "What is the most difficult thing about taking a trip abroad?" is subjective, as "difficult" varies by person.
4. "What is the average income of a dentist in the United States?" is objective, measurable, and has a verifiable numerical answer from reliable data sources.

Answer:

D. What is the average income of a dentist in the United States?