Amit05 wrote:
Because ofdifferences in the humans body's internal pressure and the ocean's, it is essential that a diver returning to the surface ascends slowly or they will suffer a painful condition known as the "bends."
A. differences in the human body's internal pressure andthe ocean's , it is essential that a diver returning to the surface ascends slowly or they....Parallel error(Difference in X and Y),'they' is incorrect here
B. the differencebetween the human body's internal pressure and the ocean's
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