A parent taking care of a 24-month-old Ellie states, "I think Ellie is ready to use the potty!" The nurse asks for signs of readiness for toilet training. The grandparent states:
a) Appears confused by the bathroom, pees on the floor in the kitchen and has wet diapers after a nap.
b) She wets her diaper and leaves it on.
c) She is able to sit upright in a chair.
d) She is able to pull down her pants, tries to pull off her dirty diaper, and runs to the potty.