The movement of the progress bar may be uneven because questions can be worth more or less (including zero) depending on your answer.
Which of the following is a compound-complex sentence?
O Because Dillon is a salesman, he has very strong opinions about his competitors, but he hasn't shared them with me.
O Because Dillon is a salesman, he has very strong opinions about his competitors.
O Dillon, a salesman, has very strong opinions about his competitors.
O Dillon is a salesman, but he hasn't shared his opinions about his competitors with me