Toddlers in Traditional Cultures Are Still Held and Carried for About

Toddlers in traditional cultures are still held and carried for about half their waking hours.Which of the following statements describes the development of their gross motor skills compared to those of toddlers in developed countries?

A) Toddlers in traditional cultures are considerably behind toddlers in developed countries.
B) Toddlers in traditional cultures are only slightly delayed compared to toddlers in developed countries.
C) Toddlers in traditional cultures are equal to toddlers in developed countries.
D) Toddlers in traditional cultures are actually more advanced than toddlers in developed countries because they experience fewer injuries associated with walking earlier.