Proofread the following sentence(s) for inconsistent tense and person. In addition, check for faulty parallelism. Select the type of error each sentence contains. Every citizen should exercise their constitutional right to vote.

A) inconsistent tense
B) inconsistent person
C) faulty parallelism

The sentence starts in the third person singular with "Every citizen" but then switches to the plural possessive pronoun "their." It should be consistent throughout, either by changing "their" to "his or her" or by making the sentence plural: "All citizens should exercise their constitutional right to vote." There is no issue with tense or parallelism.