Aperson who chooses a chicken leg that provides 0.5 milligram of iron and 95 kcalories instead of 2 tablespoons of peanut butter that also provides 0.5 milligram of iron but 188 kcalories is using the principle of nutrient: a. control. b. adequacy. c. density. d. moderation.

c. Density.

Explanation:

The principle of nutrient used here is Density. Here the person had two options either he could choose chicken leg or 2 tablespoon of peanut butter both provide 0.5 milligram of iron.

But since he wanted less calorie intake he chooses chicken leg as the calorie intake from peanut butter was almost twice from butter than from the chicken.  hence option is correct.

b.

explanation:

grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered