Answer:
Products can be redesigned for improvements.
Step-by-step explanation:
Products tend to become obsolete with time and change of technology thus engineers perform constant research on products to redesign them in order to reach customer expectations.
After an apprentice, which is a training that involves hands on work a student gains work exposure in that field. However, it is a requirement for an engineer to gain a college degree in that field and a practicing license to become an engineer.
Engineering being a career that involves the building environment, industrialization, technology/innovation and construction, it is a fast growing industry making engineers very marketable in today's job market.