“I chose my major because I thought it would provide me the skills and knowledge to successfully achieve my career goals,” is a good answer. It doesn’t get too specific or delve into your personality. You don’t want to give away too much information during the hiring process.
As with any other part of the job interview, be sure to stay positive. This advice is especially relevant for this question. Many people don’t graduate with their first choice of major. You don’t want to appear indecisive or unfocused. Stick to answers that make you look like the best candidate for the job.
Though you may only hear this question if you went to college, some high schools still have specializations in vocational trades. The same is true of vocational schools themselves. The answer for this question should be roughly the same. You could highlight why you’re excited to begin working in this industry instead of going to college.