Jamail shows little distress when his mother leaves the room and little emotional response when she returns. Ainsworth would characterize Jamail’s attachment as ____.?

Children of schizophrenics are about ______ times more likely to be schizophrenic than other children

a. 5 c. 15 b. 10 d. 20

How many of the 60 species of the genus Nicotiani can be used for human consumption?

a. 2 b. 7 c. 15 d. 28