Ellen used a coupon at a restaurant for a certain percent discount of the meal. what percent discount did she receive?

The question is not clear, but it is assumed that the discount is a rate previously established on the coupon. This can be 10%, 15%, 20%, 25%, etc. For this reason no calculations are made to determine the relationship between what is requested in the question and what Ellen could actually receive as a benefit.

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

if it is for a job, then you should learn everything you can about the job, like what does it involve, what qualification is required and how you are the right person for that job. dress appropriately for the interview. get plenty of rest the night before. good luck!