Question

Which group(s) of infants would know their own limitations if placed at the top of a steep incline?

Answer 1

I believe the answer is: experienced crawlers & experienced walkers
both of these groups spent the majority of their time exploring the environment around them through crawling or walking.
Because of this, their body got used to the amount of distance that they could took in one movement and understand if a distance is too large to cover within one movement.