b. sensorimotor
c. formal operations
d. preoperational
An infant who cannot talk but can play with her food is in the sensorimotor stage.
According to Piaget's theory of cognitive development, this stage lasts until a child is 2 years old and it is characterized by an considerable improvement of the baby's skills and abilities such as sucking and grasping. In that way, children are able to develop their motor movements, which allow them to play with their food; however, they do not learn to talk during this period. Language development starts during the preoperational stage, which extends from age 2 to age 7.
An infant who can not talk but can play with her food is in the SENSORIMOTOR stage of development of Piaget's four stages of cognitive development.
Answer:
The Navajo code talkers played crucial roles in every Marine offensive in the Pacific, from Guadalcanal in 1942 to Iwo Jima in 1945. ... A two-man team of code talkers attached to a Marine regiment relay coded orders over a field radio
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