Look at botticellis birth of venus. what is a notable feature of this work ?

I am not sure that/if this is correct, but I would say that your answer is B. It lacks mathematical perspective.

Explanation:

For me, in both cases here the artist does not use linear perspective. The artist places all the figures in the foreground, and creates a sense of flowing, curved lines running through the figures, their gowns, their hair.