Answer: B: 1/5
Step-by-step explanation: To find the probability of a students favorite class being history, we add all of the students to a sum. When added correctly, you should have a sum of 60 students. The next thing we do is create a fraction of the amount of students that enjoy history. This makes our answer 12/60. While this is correct, it makes any other possible calculations a bit more difficult so we must simplify it. To simplify you simply divide the fraction until you can no longer divide it with common factors. So I divided 60 by 12 to get 5. Knowing that this is one number, we would put 1 as a numerator and 5 as the denominator. This means our answer is 1/5 or B.