plz answer all 4 question. plz do not take this assignment if you don't know the answer.

thanks in advance.

Question 11 What is wrong with the following code? var roster = { students: { givenName: "Philip", surname: "Robi { givenName: "Mariposa", surname: "Her sortBySurname: function(descendingOrder) { this.students sort(function(a,b){ if (a.surname > b.surname) { return descendingOrder ? 1: -1; if (a.surname