An automatic response that is innate and does not require learning.

स्वाभाविक प्रतिबिंब

English Usage: The baby exhibited an inborn reflex when the doctor touched its foot.

Hindi Usage: जब डॉक्टर ने बच्चे के पैर को छुआ, तो उसने स्वाभाविक प्रतिबिंब दिखाया।