Removing personal information from an online résumé is

a mistake
practicing cyber-safety
not necessary
none of the above

Removing personal information from an online resume is practicing cyber safety. When adding your resume online you need to put as little personal information as possible so only your name and an email address that is not your personal email but one used specifically for jobs. If you want to you can add a phone number. You remove as much as possible and leave the basics so you do not add your date of birth, home address, you do not need to put your nationality or the city you live in.

answer: a. the kind of population living in your neighbourhood.

the census explorer data tool by the us census bureau allows the user to zoom in on any neighbourhood within the united states and find the kind of people residing in that by race and age.  

the tool needs to needs to be used twice – once in order to find what type of people reside in a neighbourhood, and then to see the age groups of the people in the same neighbourhood.