A sentence is provided in indirect speech. From the four given options, choose the one that most accurately conveys the sentence in its corresponding direct speech:
The librarian said that silence must be maintained in the library.

Correct option is C

The correct direct speech is option (c) “Maintain silence in the library,” said the librarian.
Explain the right answer in detailed form:
· The sentence is an instruction/rule being imposed by the librarian. In indirect speech, such instructions are often reported using said that / told / ordered / instructed and the content may appear as a rule: “silence must be maintained…”
· When we convert such rule-based indirect speech into direct speech, the most natural and exam-acceptable form is an imperative sentence (command/request form).
· Therefore, the direct speech should be: “Maintain silence in the library.” This directly reflects the instruction implied by “must be maintained.”
Explanation of context of passage (sentence context):
· A librarian is an authority figure in a library, and maintaining silence is a rule/instruction.
· The modal “must” shows compulsion/necessity, which aligns with an order/command in direct speech.