In the last sentence of the passage, the word "confinement" is closest in meaning to the word" ______ ".

A．don't see the seriousness of the present situation
B．don't quite see the use for these sciences
C．only consider natural sciences as true sciences
D．are unable to solve social problems with them

A．some achievements made in social and behavioral sciences
B．the demand for social and behavioral studies
C．the current trend in the increase of crimes
D．the inefficiency of criminal justice and prison policies