12. which of the following sentences has both a compound subject and a compound object? a. john and his wife danced and sang. b. jane and liza love books and music. c. helen and her children are going to the zoo. d. amy and paul watched television before bed.

Which sentence is an example of objective, third-person writing that could be found in a scientific essay? a. i was 15 years old when i developed an eating disorder. b. my sister developed an eating disorder when she was a teenager. c. eating disorders often appear during the teen years. d. you are most likely to develop eating disorders during your teenage years.