Robert G’s Answer
Shankar, it is terrific that you are beginning to think about these important decisions so early. All of the choices above are great areas of focus. When I was preparing for college, I thought about all of the things I enjoy doing and would want to do (not career specifically but more so types of activities like building things, teaching someone, working directly with people or problem solving). Any careers leverage multiple types of expertise sand much of what you learn in college will or should be transferable.
Next, think about what if anything of those careers or fields of study interest you- is it the cutting edge science of aeronautics, the learning and development of teaching, laboratory work as an engineer? Figure which one aligns most activities you would want to focus on that would make you happy long term.
Lastly, also think about where you might or need to be - which if any career would mandate a move to a different location, or constant travel vs none, etc.
As long as you are happy about the prospects of a career, you can't go wrong. And most times those who start in one college major often either Transfer to different majors or adjust careers as they move forward.
Good luck, Rob.