Which developmental trait is atypical for a seven-year-old girl who climbs stairs using two feet on each step?

A seven-year-old girl climbing stairs using both feet on each step is indeed considered atypical for her age, as most children of this age are generally expected to climb stairs in a more efficient manner, typically using alternating feet. The ability to navigate stairs using one foot per step indicates improved gross motor skills, coordination, and balance, which are commonly developed by around age four to five.

Choosing two feet for each step may signal developmental delays in motor skills. Climbing stairs with both feet may suggest she has not yet developed the muscle strength and coordination necessary to perform this task in a more typical manner. This could be an area where further assessment or intervention may be needed to support her development in gross motor skills.

The other options are more aligned with typical developmental challenges or variations that can occur at this age. Transition frustrations often relate to behavioral or emotional responses to changes in routine, lack of keyboard use may not significantly impact her overall development at this stage, and stress-induced stuttering can occur but isn't inherently tied to gross motor milestones. Thus, the two-feet stair climb distinctly highlights an atypical gross motor development characteristic for a seven-year-old.