Why is 'A' wrong?
A) has done seriously and potentially fatal damage to
(D) has done serious and potentially fatal damage to
Seriously and potentially are both adverbs. An adverb modifies either a verb or an adjective and never another adverb. Here ‘seriously’ can only modify the adjective fatal’ Fatal is an absolute adjective and does not take an intensifier such as seriously or less seriously.
Therefore, A is ungrammatical. On the contrary, in D, the two adjectives serious and potentially
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A) has done seriously and potentially fatal damage to
(D) has done serious and potentially fatal damage to
Seriously and potentially are both adverbs. An adverb modifies either a verb or an adjective and never another adverb. Here ‘seriously’ can only modify the adjective fatal’ Fatal is an absolute adjective and does not take an intensifier such as seriously or less seriously.
Therefore, A is ungrammatical. On the contrary, in D, the two adjectives serious and potentially
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