I believe the answer you are looking for is D. Earlier, Both explain when the first messages were left. Hope this helps!
-Lion
Any answer choices?to pick from
One great example of suspense in the Hobbit is when Bilbo is in Smaug's smoky, gold encrusted lair, trying to find the sparkling cup, without awakening the dragon. A few times, we see the dragon release a puff of smoke, or stir, and Bilbo stops abruptly, than tiptoes forward quietly. There is so much suspense here while we await his fate!!
Reason and choice. I hope I helped!