Play in which children manipulate objects to produce or build something is called ___________ play

A woman attends a lecture on the relationship between language and thought given by Edward Sapir and Benjamin Lee Whorf. She would most likely hear them express the hypothesis that

a. there are cross-linguistic differences in thought. b. language and thought are not related. c. language processes are primarily learned, while thought processes are primarily inborn. d. each member of a language community thinks very differently from every other member of that same community.

According to a study by Barr (1990), the peak period of crying is reached at about

a. 2 weeks of age. b. 6 weeks of age. c. 12 weeks of age. d. 24 weeks of age.