Explanation:
Answer: As he repeatedly knocked on the door but received no response, the traveller sensed an eerie atmosphere and came to the realisation that no one was going to answer the door. He was at the door all alone and as time passed, he grew uneasy at the deathly silence and finally decided to you leave.
I'm positive its is c because it's not a full sentence and doesn't really have a subject in it.
Explai and Answer: I will go with c because when she trying to contact her husband she heard something which is bank robbery .
the because children from many cultures are in the class he learns that Americans are division