If a 3-year-old cannot do which of the following, it may raise developmental concerns?

At the age of 3, children typically achieve certain developmental milestones that indicate their growth in various areas, including gross motor skills, fine motor skills, and language development. The ability to pedal a bike is not usually expected at this age, as most children may not yet have the coordination and strength needed for this activity. Therefore, if a 3-year-old cannot pedal a bike, it does not necessarily raise significant developmental concerns since the skill is typically developed later in early childhood.

In contrast, the other options represent skills that are more relevant for a 3-year-old. For example, riding a tricycle is a common expectation for children in this age group, as it requires gross motor skills and balance. Drawing a circle is a fine motor skill that shows hand-eye coordination and is often achieved around age 3. Speaking in complex sentences indicates advanced language development, which is also expected to begin developing around this age. Thus, difficulties in these areas might offer more direct insights into potential developmental delays or concerns.