10 Points + Brainliest to first correct answer. Please give explanation for Brainliest. Any fake answers will be reported and deleted.
PLEASE ONLY ANSWER IF YOU ARE POSITIVE!!
Even the social studies teacher herself could not find the answer to the tough question.

Read the sentence.

In this sentence, “herself” is used as

a personal pronoun.
an object pronoun.
a reflexive pronoun.
an intensive pronoun.