Many entomologists say that campaigns to eradicate the fire ant in the United States have failed because the chemicals that were used were effective only in wiping out the ant's natural enemies, which made it easier for them to spread.

(A) which made it easier for them
(B) which makes it easier for it
(C) thus making it easier for them
(D) thus making it easier for the ant
(E) thereby, it was made easier for the ant

Many entomologists say that campaigns to eradicate the fire ant in the United States have failed because the chemicals that were used were effective only in wiping out the ant's natural enemies, which made it easier for them to spread.’thus making it easier for the ant’

Explanation:

The chemical is aiding the spread of the ant.

a factory opens that mass-produces light bulbs.

explanation:

not sure if that's an answer to your questions but this is an example! : )

answer; decreased;