An analysis of tree bark all over the globe shows that chemical insecticides have often spread thousands of miles from where they were originally used.
A. that chemical insecticides have often spread thousands of miles from where they were originally used
B. that chemical insecticides have spread, often thousands of miles from their original use
C. chemical insecticides, having often spread thousands of miles from where they were used originally
D. chemical insecticides, often spreading thousands of miles from where their original use
E. chemical insecticides, often spreading thousands of miles from where they were originally used
Correct Answer Below (so you don’t see it while reviewing the question)
Correct Answer: A
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