Fill in the blank with a suitable reflexive pronoun from the options given below:
They agreed amongst ___ that they would not tell anyone.
A reflexive pronoun ends ...self or ...selves and refers to another noun or pronoun in the sentence such as yourself, himself, themselves, herself etc.
In the sentence given, 'they' agreed not to tell anyone. The pronoun used in the sentence is 'they' and the corresponding reflexive pronoun to 'they' is 'themselves' and option C is the correct answer.
Option A) herself is the reflexive pronoun of the pronoun 'her'.
Option B) himself is the reflexive pronoun of the pronoun 'his'.
Option D) myself is the reflexive pronoun of the pronoun 'my'.
Therefore, options A, B and D are incorrect.