The use of the reflexive pronoun "myself" is incorrect in this sentence, as it has no previous first person pronoun to refer back to. The reflexive pronoun can be changed to the simple first person objective pronoun, "me." Therefore, the correct answer choice is "The packages could only be signed for by me."

The use of the reflexive pronoun "myself" in this sentence is incorrect and confusing, as it has no previous first person pronoun to refer back to. The reflexive pronoun can be changed to the simple first person objective pronoun "me" without changing the meaning of the sentence. Therefore, the correct answer choice is "Every single paper written by an employee must be given to me."

The use of the reflexive pronoun "myself" is incorrect in this sentence, as it has no previous first person pronoun to refer back to. The reflexive pronoun can easily be replaced by the simple first person objective pronoun, "me." The only answer choice that actually does this is "was only ever seen by me."

The use of the pronoun "myself" is incorrect in this sentence, as "myself" is a reflexive pronoun and needs a referent earlier in the sentence. As no earlier use of a first person pronoun exists in the sentence, a reflexive pronoun is inappropriate. "To me" is the correct answer choice. "To I" might look like a potentially correct answer, but because "I" is the object of the preposition "to," it needs to be in its objective form, "me," not its subjective form, "I."

The use of the pronoun "themselves" is incorrect in the sentence, as "themselves" is a reflexive pronoun and needs a noun earlier in the sentence to refer back to as a referent. This is the only issue in the sentence, and replacing "themselves" with the non-reflexive third person plural object pronoun "them" is sufficient. The correct answer choice, then, is "to them as soon as."

The use of "for me" is a confusing and odd use of the pronoun. Normally, we might consider changing "for me" to "for myself," since "I" has already been used in the sentence and "myself" would have a clear antecedent. However, the phrase "for myself" isn't necessary in this sentence; the sentence still makes complete sense without the inclusion of the phrase. Omitting the underlined portion simplifies the sentence and is grammatically correct, and it is the only answer choice that both corrects the error contained in "for me" and doesn't introduce other grammatical errors.

The use of the reflexive pronoun "herself" in this sentence is incorrect and confusing, as no third-person female pronoun or name has been mentioned, so "herself" has no antecedent. The sentence only needs to use the simple female third-person objective pronoun "her." Therefore, the correct answer choice is "to her immediately, with no delays."

We need to chose a relative pronoun to replace "which" that can describe a person, because the pronoun is referring to Tony's teacher. Of the available answer choices, only "who" and "whom" can refer to people. "Whom" is an objective pronoun while "who" is a subjective pronoun. A trick for deciding which form to use in a sentence is to replace the pronoun with the word "him." If "him" makes grammatical sense, you need to use the objective form, "whom." In this sentence, it does not make sense to say "him hesitated before answering," so we need to use the subjective form, "who."

The use of the word "their" in the sentence is highly problematic, as it is both plural when the subject is singular and creates an odd referent. These issues can both be cleared by replacing it with the article "a," as in the correct answer choice "more than once in a lifetime."

The use of the reflexive pronoun is incorrect in the sentence, as "himself" needs a previous use of the third person pronoun to refer back to in its usage. This pronoun needs to be changed to the simple pronoun "him," and otherwise there are no further issues with the sentence. The correct answer choice is "for him."