You're answer is option A "effect." Remember that effect means to change due to a result, and affect means to have a effect on something.
Hope this helps!
The dark forest is eerily quiet as the thick fog rolls in. As they continue forward, the fog becomes as thick as a blanket. The trees dead silent, not a sound to be heard. They keep going into the denser forest, the fog swallowing them up. They were never seen again. Sometimes, their voice echoes in the darkness, attempting to lure someone else into the quiet, dark, and dense forest.
Answer:
a song was sung by her .
I was hit by somebody .
the bus was stopped by us .
he was not let go by them.
the prize was not won by her .
their beds were nor made by them.
they were not told by me .
were they told by you?
was the letter sent by him ?