When can babies respond to mobiles?

The ability of babies to respond to mobiles is closely linked to their visual development. Babies begin to distinguish colors around the age of 3 to 4 months, and their vision continues to improve as they approach 6 months. When they can see in color, they are more likely to engage with visually stimulating objects, such as mobiles, which are often designed with vibrant colors and patterns intended to captivate a baby's attention.

At this stage, their visual tracking abilities also develop, allowing them to follow moving objects, making the experience of looking at a mobile both stimulating and educational. Thus, the correct answer emphasizes the significance of visual perception in a baby's interaction with their environment, particularly with colorful, visually engaging items like mobiles.