Question

this is doubtful will they be able to get good grades combin using noun clause

Answer 1

Answer:

A Complex Sentence consists of one principal clause and any number of subordinate clauses.

A Noun Clause is a subordinate clause which does the work of a noun in a complex sentence

Explanation:

Option D is correct. The subordinate clause what you say acts as the object of the preposition in, in the principal clause. The object is always either a noun or a pronoun and as the subordinate clause in this sentence behaves as a noun, it is considered as a subordinate noun clause.

Option A is incorrect as an adverb clause has been used to combine the two sentences.

Option B is incorrect because it is a simple sentence.

Option C is incorrect as the subordinate clause behaves as an adjective clause.