In a study of eighth and tenth grade students, researchers found that:

The two most basic states of sleep are ______ & _______

Fill in the blank(s) with the appropriate word(s).

In one study highlighting the role of culture in relation to IQ, Sudanese children averaged 40 points lower when IQ tests required children to _____.

A. use pencils, which they had not used before B. solve complex problems, which they could not solve C. sit still, which is not practiced in their culture D. recall knowledge that they already forgot