It has one line of symmetry which runs right down the middle of it.
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Answer:
c. a poisonous gas cloud erupts
Explanation:
#Carry on learning
Cooper, James Fenimore, 1789–1851, American novelist, b. He was the first important American writer to draw on the subjects and landscape of his native land in order to create a vivid myth of frontier life.
Ballads tell stories. So B) is your answer.