The first stage of Piaget's development theory is?

The first stage of Piaget's development theory is?
(a) Sensorimotor stage
(b) Pre operational stage
(c) Concrete operational stage
(d) Formal operational stage

✅ Correct Answer: (a) Sensorimotor stage
Explanation: The first stage (birth–2 years) is called the sensorimotor stage, where infants learn through senses and actions.