A student wrote the following question to guide her research: How do bicycles help the environment? Which statement provides the best evaluation of this question?

This is a strong research question because it can be answered with an opinion and has a broad focus.
This is a weak research question because there is a clear focus that requires no analysis.
This is a strong research question because it is open ended and has a clear focus.
This is a weak research question because it requires a specific answer and needs to be investigated.