What is the most appropriate assessment to perform to evaluate maria’s developmental milestones ?

3-year-old Maria is brought to the clinic for a routine check-up. Her parents are concerned because she is still not using two- or three-word phrases and is not yet fully potty trained, which is causing some frustration for them. Maria’s parents report that she understands simple instructions and can follow basic requests. Her family practices a Filipino caregiving style, where grandparents play a significant role in child-rearing and may have different expectations for developmental milestones.