Read the following sentences: "When muscles work, they somehow communicate with the brain, liver an other organs. Until recently, scientists weren't sure how muscles sent those messages."
As used in the passage, communicate means
o be in touch with
to trade cells
use IL-6
to fight with

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?