Sentence Correction (SC) | If the depletion of the ozone in the upper portion of the Earth's atmo

Error Analysis:

Usage of "at least one thousand miles wide or wider" is awkward. The correct usage is "at least one thousand miles wide".

Process of Elimination:

A. Wrong. Explanation given in Error Analysis.
B. Correct
C. Wrong. Same error as in A.
D. Wrong. "were continuing" is wrong verb usage.
E. Wrong. Same error as in A.

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