Because “one” is the subject in the relative clause that begins the sentence, “one” must also be the subject of the main independent clause that concludes the sentence. Pronouns and their antecedents must match, and “you,” “they,” and “he” do not match “one.” Also, “use” is more concise than “be using,” which is unnecessarily wordy.

Because the antecedent (“a person”) is singular, “their” and “they” are incorrect pronouns. Because the antecedent doesn’t indicate gender, the male “he” isn’t sufficient and “he or she” must be used. Although “its” and “it” are singular pronouns, they are used to talk about objects and not about people, so they are incorrect.

The sentence initially uses the pronoun "one," but then switches to "you." These pronouns should be kept consistent. 

The error in the sentence is in the consistency of pronouns. The sentence begins with "one" and therefore "one" must be used as the pronoun through the remainder of the sentence. 

The error in this sentence stems from the lack of agreement between its pronouns. Since the sentence begins with the pronoun "one," we must change the other pronoun ("you") to "one" in order to make the sentence correct. 

The use of the pronoun "her" in the underlined phrase is confusing, as it is not clear whether this is a new person in the sentence or refers back to the subject. To be more clear, a reflexive pronoun must be used. The correct answer is "hard on herself."

The only issue in the sentence as it is written is the use of "myself," a reflexive pronoun, when there is no other first person pronoun to which it can refer back. The only answer choice which both appropriately uses "me," and keeps the same meaning is "back to me."

The only issue with the sentence is its use of the reflexive pronoun "myself," despite not previously using a first person pronoun. All reflexive pronouns need an antecedent, or previous pronoun in the same person, to be used correctly, or it should be changed to the simple pronoun. As this is the only problem with the sentence, "given to me" is the correct answer choice.

The only issue with the sentence is the use of the reflexive pronoun "myself" without a previous use of the first person pronoun. All reflexive pronouns need to refer back to an earlier use of the pronoun in the sentence. The solution to this issue is to change "myself" to the simple "me," making "directly to me" the correct answer choice.

The use of the reflexive pronoun "yourself" is incorrect in this sentence, as it has no previous "you" to refer back to. "Yourself" needs to simply be replaced by "you," making "reviewed by you" the correct answer choice.