Question

lo 3.3. why are infant skulls significantly smaller and rounder than adult skulls?
to accommodate the developing brain and provide support for the growing face.
the skull size and shape are determined by the diet and are not related to brain development.
the skull size and shape are determined by genetics and are not related to brain development.
the skull size and shape are determined by the environment and are not related to brain development.
the skull size and shape are not different between infants and adults.

Explanation:

Infant skulls are designed to support the rapidly - growing brain and face. The brain of an infant is still developing, and the skull needs to be flexible and have a certain shape to accommodate this growth. Diet, genetics, and environment do not solely determine the shape and size in relation to the brain - development factor as strongly. Also, it's a known fact that infant and adult skulls differ.

Answer:

To accommodate the developing brain and provide support for the growing face.