The mode of the distribution is the age that has the highest frequency. That is the age that occurs most
Rearranging the numbers in ascending order, we have
19, 23, 27, 27, 28, 29, 32, 34, 34, 36, 36, 39, 40, 42, 43, 44
From the ages, we can see that age 27 appears twice, age 34 appears twice, and also age 36 appears twice which is the highest frequency.
This makes the distribution trimodal
Hence, the modes are 27, 34 and 36