For the given data 16, 23, 18, 34, 41, the three year moving averages are

19, 25, 31

The correct answer is Option (4) → 19, 25, 31

$\text{Data: } 16, 23, 18, 34, 41$

$\text{First average} = \frac{16+23+18}{3} = \frac{57}{3} = 19$

$\text{Second average} = \frac{23+18+34}{3} = \frac{75}{3} = 25$

$\text{Third average} = \frac{18+34+41}{3} = \frac{93}{3} = 31$

The three-year moving averages are $19, 25, 31$.