Infancy is the earliest stage of human development, typically covering the first year of life. During this time, babies grow rapidly, both physically and mentally. They learn to recognize their caregivers, respond to sounds, and begin to develop basic motor skills. Infants rely heavily on their parents or guardians for nourishment, comfort, and safety, forming strong emotional bonds. As infants explore their surroundings, they engage in sensory experiences that help shape their understanding of the world. This period is crucial for brain development, as neural connections are formed through interactions and experiences. Overall, infancy lays the foundation for future growth and learning.