A blanket of thick fog covered the area

Question

Visibility there was almost zero

How are the two related?

a. The two sentences establish a comparison

b. The second sentence contradicts the first

c. The first sentence explains the meaning of visibility

d. The second sentence indicates a direct result of the first*

Answer 1

What is YOUR answer?

Answer 2

Right! :-)

Answer 3

A recent study conducted by British zoologists concludes that, like birds and other animals, human beings possess a “homing instinct.” The study showed that this homing instinct or natural sense of direction is based on some kind of perception of magnetic fields. When blindfolded students who otherwise