Question 14: Mark the letter A, B, C, or D on your answer sheet to indicate the undelined part that needs correction in each of the following questions: Searching for alternate forms of energy does not necessary mean the abandonment of fossil fuels as an energy source.
necessary → certainly
We see that necessary is an adjective that stands between the negative auxiliary does not and the main verb mean, so necessary is wrong in terms of type. Therefore, the adjective must be changed into an adverb.
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