The answer is C. Hope this helps :)
Integers that are not whole numbers are like -5 -8 -7 and etc...
5 and 5/10s sounds like 5.5 so I'd do 5.5+0.02=5.52
The first figure has 3 angles, the second one has 4 angles, the third one has 5 angles so the next one will have 6 angles.
The violet figures inside stick with each side of the outer figures in the middle, so the last figure will look more less like in the attachment.