I got it. Now i know how to call a function. I got my answer right.
var greeting = function (name) {
console.log("Great to see you," + " " + name);
};
// On line 11, call the greeting function!
var greeting = function (name) {
console.log("Great to see you," + " " + "Deneb");
};
greeting("Deneb");
To call a function we always need to type the function like"Greeting","myUser" etc and then give it the function parameter. This is what i did.