You need to specify areas of interest on the application so that you end up applying to the correct destination college or school. Also, they require you to explain why you are interested in those discipline (at least, last year’s application required that). However, you are not accepted to any particular major nor are you expected to declare your major right away. It’s fine to have some areas of significant interest but keep an open mind as you haven’t even started college yet. You never know what course will spark your interest.
Your ACT and your GPA (right at an A- unweighted) should be good enough for Carlson. Three years of science including physics bio and chem are required so hopefully you have fulfilled/are fulfilling that requirement.