2 Questions about engineering (as a freshman)

As a frosh at Texas A&M, your first priority is earning a high GPA. A 3.5 GPA assures admission into your desired engineering major; otherwise, you must compete for admission, applying at least three majors, and may not necessarily get into your first choice.

https://engineering.tamu.edu/academics/advisors-procedures/entry-to-a-major/general-engineering-program/class-of-2021
https://engineering.tamu.edu/academics/advisors-procedures/entry-to-a-major/application-preview