Ollie wants to sign up with an online social network called teensmeet, which other kids at school have joined. the teensmeet site asked ollie for the following personal information: his full name, the name of his school, the city where he lives, his age, and his favorite music.

which pieces of information should ollie give to stay safe?
his first name, school, city, and an age older than he is
his first name or nickname and his favorite music
his first name, real age, city, favorite music, and school

i believe it is 40–40–20%

explanation:

im not exactly sure but i think its b!

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.