Question

recent studies have revealed that ______ is the most important nongenetic factor that can help to slow brain deterioration.
\bigcirc eating more fat
\bigcirc exercising more
\bigcirc avoiding cigarettes
\bigcirc meditation

Explanation:

To determine the correct answer, we analyze each option:

• "Eating more fat" is generally not associated with slowing brain deterioration; in fact, excessive unhealthy fat intake can have negative effects.
• "Exercising more" is beneficial for overall health including brain health, but recent studies highlight avoiding cigarettes as a more crucial nongenetic factor for slowing brain deterioration.
• "Avoiding cigarettes" is supported by research as smoking is linked to accelerated brain aging and deterioration, so avoiding cigarettes is a key nongenetic factor.
• "Meditation" has mental health benefits but is not identified as the most important nongenetic factor for slowing brain deterioration compared to avoiding cigarettes.

Answer:

avoiding cigarettes (the option with the filled circle, corresponding to the statement that avoiding cigarettes is the most important nongenetic factor to slow brain deterioration)