Final answer:
The best response would be to assure the mother that it is normal for a 2-year-old girl to not be potty trained yet.
Step-by-step explanation:
The best response from the friend would be to assure the mother that it is normal for a 2-year-old girl to not be potty trained yet.
According to the normative approach, most children are toilet trained by the age of 4. However, the age at which children start potty training can vary.
It is important for the mother not to rush the potty training process and to wait until her daughter shows signs of readiness, such as showing interest in the potty or being able to communicate when she needs to use the bathroom.