Which nutrient would you take to maintain healthy eyesight?
vitamin a
vitamin k
vitamin d
vitamin b

Nutrient that we should take to maintain a healthy eyesight is vitamin A,

which we can found on carrots, berries, and almond

Administration and victim

Behavioral science is the study of human behaviors and how they can be influenced.  by examining patterns in behavior as well as reactions, individuals with behavioral problems can be more adequately treated, resulting in greater mental health of our society/the public.