Why my 4 years old doesn’t respond? What should I try to make her respond ? Is there anything to worry about?

A. Four years is a very good age at this age kids are very prompt in responding actually they’re very good in responding from the age of eight months to 1 year right now your child is 40 years if not responding not paying attention to what you say then that is definitely a matter of concern you should consult your doctor as soon as you can