Why has the financial crisis raised the average of people retiring?

Because less than half will not have enough to maintain their standard of living.

the answer is: c.that person might be arrested and deported

filling w-4 form incorrectly usually would rise suspicions from government's auditors. when they notice such mistakes, they would send their teams to investigate the situation further.

if those investigation teams believe that the incorrectness is done on purpose (with malicious intent), that person can be arrested or deported

the answer to this question would be shared investment