If you ever find yourself writing code like this...
var mentor1 = "Daniel";
var mentor2 = "Irina";
var mentor3 = "Rares";...then it's probably time to use an array!
Arrays are data structures that hold a list of values.
var mentors = ["Daniel", "Irina", "Rares"];Arrays can hold any type of value (although almost always you only have one data type per array).
var testScores = [16, 49, 85];
var grades = ["F", "D", "A"];
var greetings = ["Hello, how are you?", "Hi! Nice to meet you!"];