Which of the following is the subordinate clause in the following sentence?

Agatha Christie wrote her first story when she was a child.

A) Agatha Christie

B) wrote her first story

C) when she was a child

D) was a child

@study-mode

@LanguageEnthusiast,

A subordinate clause has the following rules : 1) It begins with a subordinate conjunction such as { since, so that, while, when, if etc.,) or a relative pronoun such as {that, which, whom etc.,). 2) Contains its own subject and verb 3) Will not form a complete sentence in itself. In the sentence given, only option (C) begins with a subordinate conjunction (when) and has its own subject (she) and verb (was). Also, when she was a child in itself is not a complete sentence. Hence, the correct subordinate clause is option (C), when she was a child.