Shifting tense while writing can mean that the writer has switched from
a. one person speaking to another.
b. active voice to passive voice.
c. past to present verb form.
d. singular to plural noun-verb agreement.

Which sentence contains a punctuation error? a. have you met my great-aunt marie raines? b. my mother wrote three children's books about the family farm. c. my sister's mother in law lives with them, and everyone gets along fine. d. another hurricane is brewing in the mid-atlantic.