Ordinary life is a worthy subject for fine art.

which evaluates the effectiveness of little girl in a blue armchair in communicating this meaning

The effectiveness of this piece of art demonstrates the worth of ordinary life by portraying a normal day of a girl sitting in a blue armchair, lying down with her dog in a second airmchair to her left. This painting shapes the naturality of the children which is the signature of the painter and a demosntration of fine art with something common in a child's life

This would be third person because they are using the correct pronouns that belongs to third person like he, the name, etc

Istrongly feel d is the answer but c is also a strong possibility