Here 'what' should be used not 'whatever'.
Whatever is used when 'something is indefinite' .so eliminate C,D,E
(A) what was lacking in his technical skill was more than made up by-Eliminate for 'lacking' . Lacked should beused.
(B) what he lacked in technical skill was more than made up by -Correct
(C) whatever was lacking in his technical skill was more than made up by-Eliminate for 'whatever'
(D) whatever he lacked in technical skill was more than made up for by-Eliminate for 'whatever'
(E)
...
Whatever is used when 'something is indefinite' .so eliminate C,D,E
(A) what was lacking in his technical skill was more than made up by-Eliminate for 'lacking' . Lacked should beused.
(B) what he lacked in technical skill was more than made up by -Correct
(C) whatever was lacking in his technical skill was more than made up by-Eliminate for 'whatever'
(D) whatever he lacked in technical skill was more than made up for by-Eliminate for 'whatever'
(E)
...







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