(A) with a decrease in what their pay may buy
(B) with what was a decrease in what they were able to buy
(C) having decreased that which they could buy
(D) decreasing in purchasing power
(E) with a decrease in purchasing power
Solution:
Pronoun
In A, the average worker (antecedent) is singular and pronoun their is plural.
In B and C, the average worker (antecedent) is singular and pronoun they is plural
In D, decade decreasing in purchasing power is awkward.
E is the best choice.
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