In the first half of the 20th century, the scientific community supported research on cognitive processes.

your answer should be c, it seems to be the only one that makes sense. mark me branliest : )

by using  production possibilities graph.  opportunity costs are key expenses in financial matters and are utilized as a part of registering money saving advantage investigation of a venture. such expenses, be that as it may, are not recorded in the record books but rather are perceived in basic leadership by processing the money costs and their subsequent benefit or misfortune.

answer; /// direct cinema limits the use of narrators; ; ; and: : : : allows the audience to observe events as they occur;