B. math teacher. Individuals must consider many personal factors when deciding which career to pursue, including their interests, aptitudes, and personality traits. When determining the career in which she will be most happy and successful, Alexa must consider all of these factors. Because she enjoys working with children and has an aptitude for helping them understand puzzles and numerical formulas, she might consider a career as a math teacher. Graphic designers, computer programmers, and financial planners should have an aptitude for mathematical concepts, but these careers do not involve working with children.