Three-Month-Old Mary Jo Can Hold Her Head Up When in the Arms

Multiple Choice

Three-month-old Mary Jo can hold her head up when in the arms of an adult, but she doesn't yet have much control of what her legs do. Which one of the following best describes Mary Jo's progression in muscular control?

A) It shows a definite delay in fine motor skills.
B) It shows a cephalocaudal trend, which is typical.
C) It shows a proximodistal trend, which is not typical.
D) It suggests that Mary Jo will probably be a good student but a poor athlete.