The crane is…………………of the wading animals.
(A) the tallest
(B) the tallest that is
(C) which is the tallest
(D) which the tallest is
This is a question on the correct use of the superlative degree. Choice (A) itself completes the sentence, giving a grammatically meaningful and complete sentence.
The crane is tallest of the wading animals.
The other choices have unnecessary words which will lead to ungrammatical sentence.
So, we can choose (A) as the answer.
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