Option 2 is the correct answer because the child's mistake in solving the problem $\frac{1}{2}$ + $\frac{1}{3}$ = $\frac{2}{5}$ indicates a misunderstanding of how to add fractions, specifically by incorrectly applying the rules of addition for natural numbers to fractions. In natural number addition, one simply adds the numbers directly (e.g., 1 + 2 = 3). The child seems to have applied this same logic to fractions, adding the numerators…Read More