What dental care interval is recommended for children starting at age 3?

It is recommended for children starting at age 3 to visit the dentist every 6 months for routine check-ups and cleanings. This is because children's teeth are developing and growing rapidly during this age, making it crucial to monitor for any potential problems and establish good oral hygiene habits early on. Option B is not recommended because it is too long of an interval, and option C is incorrect because dental care should continue beyond the first 2 years. Option D, while it may seem like a logical schedule, does not account for individual differences in children's dental health and may not provide enough frequent monitoring and prevention.