Answer:
Relative Clause.
Explanation:
A relative clause is the clause that consists of a subject and a verb. This clause begins with relative pronouns such as 'who, whose, whom, where, when, that, etc.' A relative clause helps in relating to something else in the sentence.
A relative clause is a dependent clause that helps in the identification of the noun that precedes it.
For example, The girl, whom the narrator met in the train, was blind.
In the above stated example, whom' is the relative pronoun that is used to identify the noun that preceded it, that is 'the girl.'
So, the correct answer is a relative clause.
Idk I think it could be C
The line from which Helen grey implies that the author thinks physical beauty is not the most valuable quality would be “but so you miss that modest charm; which is the surest charm of them all” there’s no focus on any physical attribute but instead on the modesty of Helen grey