A freestanding sculpture of a woman's head. Pablo Picasso’s Head of a Woman, is an example of a(n) .
a.
sculpture in the round
c.
model
b.
impasto
d.
relief sculpture

A sculpture in the round

Explanation:

based on the images pictured above, the major difference between the two cathedrals: the cathedral of notre dame and the amiens cathedral, is that the cathedral of notre dame emphasizes the horizontal lines while the amiens cathedral emphasizes the vertical lines.