For the given 5 values 24, 18, 33, 42, 24; the 3-year moving averages are:

25, 31, 33

The correct answer is Option (2) → 25, 31, 33

$\text{Given data: }24,\;18,\;33,\;42,\;24$

$\text{3–year moving averages:}$

$\text{First average }=\frac{24+18+33}{3}=\frac{75}{3}=25$

$\text{Second average }=\frac{18+33+42}{3}=\frac{93}{3}=31$

$\text{Third average }=\frac{33+42+24}{3}=\frac{99}{3}=33$

The 3–year moving averages are: $25,\;31,\;33$.