A report indicated that about sixty percent of teenagers found it very easy to manage Facebook privacy settings.

A. People are unaware of what they are eating.
B. People may be given frightening food to eat.
C. The food may cause life-threatening allergy.
D. It takes much time to get the food prepared.

A. hasn’t been hilly accounted for
B. doesn’t really exist
C. can justify the marine diversity
D. is derived from undersea