Most graduate schools do not discriminate based on undergraduate education, as long as you have a Bachelor's degree (preferably honours). What's most important is your overall GPA and specific prerequisite courses. Here are a few things to consider when deciding what undergraduate program to take:
1. Do what you like
Don't enrol in a program just because it's "hard" or "easy," take a program that offers classes that interest you. When you enjoy what you're studying, it's more likely that you'll find it easy.
2. Consider prerequisites
Find out what program offers the prerequisites you need. For example, if you are an English student, you may not be allowed to take a physiology class. On the other hand, every prerequisite will be either available online or offered by another university with a letter of permission, but it may cost more and become more of a hassle.
3. Get experience
If you are interested in delving into the field of communication sciences and disorders, consider choosing a program that will allow you to discover it in a deeper way. Some schools offer unique research or practicum opportunities to students that are enrolled in a program focused on sciences, languages or psychology.
If you are still questioning what subject to major in, don't hesitate to ask other people what path they took. Connect with current students, SLPs or academic advisors to investigate many possibilities.