What is the only information that isabel should give to best ensure her safety?
a) her first name, last initial, school, city, and an age older than she is
b) her first name or nickname only and her favorite foods
c) her first name, real age, city, favorite foods, and school

Hello. This question is incomplete. The full question is:

"Isabel wants to sign up with the online social network TeenBook, which she heard about from her friends at school. The TeenBook site asked Isabel for some personal information to complete her registration. In addition to her full name, TeenBook asked for the name of her school, the city where she lives, her age, and her favorite foods. What is the only information that Isabel should give to best ensure her safety?   a) her first name, last initial, school, city, and an age older than she is  b) her first name or nickname only and her favorite foods  c) her first name, real age, city, favorite foods, and school"

b) her first name or nickname only and her favorite foods

Explanation:

To guarantee your security, Isabel cannot give out a lot of personal information such as your address, the number of your documents and others. This is because this information will be online for anyone to see and this can put Isabel in a dangerous situation, in addition to exposing the girl unnecessarily. For this reason, we can say that to ensure her safety, Isabel must provide only her first name or nickname and her favorite foods.