The answer is comet. the paragraph explains comet best
Industry in India and Southeast Asia also relies on the summer monsoon. A great deal of electricity in the region is produced by hydroelectric power plants, which are driven by water collected during the monsoons. Electricity powers hospitals, schools, and businesses that help the economies of these areas develop
(1) its [e] social customs
(2) its [b] pollution pestilence
(3) its [c]
(4) its [e]
(5) its [d]
(6) its [d]
(7) its [e]
Just took the test and figured out the answer was A. Hoped I helped you and everyone else reading this.