An individual who exerts less effort when working on a group task if individual contributions will not be evaluated is engaging in what is called social loafing social facilitation

they have a larger number of potential customers because people anywhere can buy from them. ( d.)

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