Question

Read the selection from the final paragraph of the article.

The people also say that whoever escapes the fever will soon be sick because they must walk
past the dead, as they walk from three to six miles to work, and back again in the evening,
without a bit of food. Added to this they are, in a great number of instances, standing in bogs and
wet places which so affects them that many of the poor fellows have been known to drop down at
their work.
Which phrase from the selection BEST helps you understand what a "bog" is?
(A) the fever
(B) the dead
(C) wet places
(D) drop down