You are writing a guide to help chemistry majors plan their class schedules. Which pattern of classification would be best for discussing the classes students must take?

A) difficult classes, slightly difficult classes, and easy classes
B) chemistry classes and other classes
C) morning classes, afternoon classes, and evening classes
D) general education classes, required chemistry classes, elective science classes, and general elective classes

The best pattern of classification for discussing the classes that chemistry majors must take is D, which includes general education classes, required chemistry classes, elective science classes, and general elective classes. This pattern of classification groups the classes based on their purpose and requirements, which is most relevant to a student's academic journey as a chemistry major. Classifying based on difficulty or time of day is not as useful or relevant for planning a class schedule. Grouping chemistry classes with other classes is also not specific enough for a guide intended for chemistry majors.