Answer:
It could be foreshadowing what could happen in the future or be trying to to show the reader this is an important idea and should he remembered.
I would say using a comma to combine the two sentences.
Answer:
<u><em>Correction:</em></u>
There is some problem though he seems very happy and confident.
(Use of present indefinite instead of present continuous)
When you see a sentence not make sense it's usually because you are leaving out important words or mixing them up in the wrong way in that sentence so due to this knowledge a dangling modifier would be C.
Answer:
D.) character versus nature is the answer.