I think the answer is B..hopefully this helps ")
Answer:
C. What health problems are linked to processed foods?
Explanation:
The other research questions are only linked to the processed foods part of the claim. In order to have a good research question, it has to be linked to all parts of the claim - in this case, "processed foods" and "health problems".
Hope this helps!
The independent clause is "WE ARE NOT EATING ON THE PATIO" the reason why, is because the second part of the sentence cannot stand on its own, due to the fact it has a because in it. because is a transition word.