Question

Fill in the blank with a suitable adverb clause:
A usual cake batter should contain .

• A. no less than thirty percent sugar
• B. thirty percent sugar
• C. eggs
• D. None of the above

Answer 1

Answer: (A)

no less than thirty percent sugar

An adverb clause is a group of words containing a subject and a verb, and it functions as an adverb, by modifying an adjective, verb or an adverb. Adverb clauses generally begin with a subordinate conjunction (since, because, while, etc.)
Option A is correct because it is an adverb clause of comparison ('no less than' is the comparative form of 'less' in the negative).
Option B is incorrect because it is a phrase, not a clause.
Option C is incorrect because it is only a word, not a clause.
Option D is incorrect because the answer lies in A.