Multiple choice general knowledge

After at what age ____, the brain shrinks a quarter of a percent (0.25%) in mass each year

  1. 25

  2. 35

  3. 30

  4. 40

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Research indicates that brain mass begins to decline around age 30, with approximately 0.25% loss per year. This natural aging process affects brain tissue gradually over decades.