Question

highlight the reflexive pronoun and the word or words that it refers to.
noun/pronoun verb article adjective preposition adverb conjunction
they themselves checked the order three times.

Explanation:

A reflexive pronoun refers back to a noun/pronoun in the sentence, reflecting the same subject. In this sentence, "themselves" is the reflexive pronoun, and it refers to the subject "They".

Answer:

Reflexive pronoun: themselves
Word it refers to: They