Brain cells O form more quickly after birth.
connect to each other before birth.
O make up to 900 connections.
O develop as an infant grows.

I would say, develop as an infant grows.

Explanation:

After birth a infant grows more of its neuron connections for a few more years then the brain will stop producing the neuron connections. This statement backs up the answer that a majority of infants brains continue to grow as the infant grows.

answer; (b) i believe its metabolic rate of the patient; plz check first