What activities might require you to provide your social security number? aboarding an airplane. bbuying something with a credit card. crenting a car. dstarting a new job.

The answer is: d. Starting a new job

In united states, the federal government work together with employers to directly cut the amount of tax that owed by employees.  Social security number is needed to allocate the tax payment that each employees need to give to the government after receiving salary from the job.

the assumption the narrator makes in this excerpt is that the messages he heards were going to hurt the narrator's mom; the narrator just springs in to action. the narrator doesn't specify in this excerpt why he believes that the messages present a problem that requires protection.