Which of the following is an expected locomotor skill at the age of 5?

At the age of 5, children typically develop a range of locomotor skills, one of which is hopping on one foot. This skill demonstrates an important level of balance, coordination, and leg strength that is characteristic of this developmental stage. By this age, children have generally improved their motor control and are able to shift their weight effectively as they balance on one foot while using the other for propulsion.

Hopping on one foot is a more advanced motor skill compared to the others listed. While other skills such as walking backwards, jumping in place, and sideways galloping are also seen in young children, they may develop at varying ages and levels of proficiency. Walking backwards and jumping in place are typically easier movements that children may master earlier, while sideways galloping might not be as frequently observed or mastered by this age. Therefore, the ability to hop on one foot distinctly indicates the physical maturation and enhanced motor coordination that is expected in a child who is 5 years old.