Which Statement Is an Unfalsifiable Psychological Claim

Multiple Choice

Which statement is an unfalsifiable psychological claim?

A) Teenagers are more sexually active than their parents tend to believe they are.
B) People are less likely to help a stranger in need as the number of other bystanders increases.
C) The hippocampus is a brain structure critically involved in the formation of long-term memories.
D) Part of the human unconscious is the id,an unobservable entity that governs basic human drives.