The correct option is C 24, 32, 40 and 48
The first 10 multiples of 8 are shown in the figure below.
8×1=88×2=168×3=248×4=328×5=408×6=488×7=568×8=648×9=728×10=80
But, 24, 32, 40, 48 are greater than 20 and less than 50.
∴The multiples of 8 which are greater than 20 and less than 50 are 24, 32, 40 and 48.