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

A．The social and behavioral sciences lost out in the race for federal science funds.
B．Governments are more than alarmed about a variety of social problem.
C．Nearly half of all urban dwelling American males can expect to be arrested for some non-traffic offense during their lives.
D．Most criminals halt their careers by age 25 to 30.

A．social problems are on the rise currently
B．the government does not try hard to solve such problems
C．some attacks on such problems are often blind
D．such problems often go unsolved