Learn English – Synonym for “to address the question”

I would like to state the following two sentences:

"The … problem addresses the question of …"

"Another direction of research addresses the question of …"

I would like to replace the second sentence, as it again uses this "to address".

So how about:

"Another direction of research is concerned with the question .."

"Another direction of research asks the question .."

Is there another sentence to avoid "question" completely?

Thank you very much for any inputs.