Which are characteristic of physical development of a 30-month-old child? (Select all that apply.)

A) Birth weight has doubled.
B) Primary dentition is complete.
C) Sphincter control is achieved.
D) Anterior fontanel is open.
E) Length from birth is doubled.
F) Left- or right-handedness is established.

Primary Dentition

The first set of teeth in the human dentition cycle, also known as baby or milk teeth, typically includes 20 teeth.

Sphincter Control

The ability to regulate the muscles that close and open passages in the body, crucial for bowel and bladder management.

Anterior Fontanel

The soft spot on the top of a baby's head where the skull bones have not yet fused together, allowing for brain growth.