Final answer:
An infant like Abigail will likely develop the skill of standing alone without holding on last.
Explanation:
Standing alone without holding on is a skill that an infant like Abigail will likely develop last. By the end of the first year, infants can typically stand while holding onto furniture or someone's hand and may be starting to walk. This milestone tends to come after they have mastered skills like pulling up onto feet and sitting without support.
Learn more about Infant motor skill development here:
https://brainly.com/question/29602410
