I am majoring in Mechanical Engineering, and I found a research opportunity I really want (it focus on Fastening and Joining). I want to take classes relevant to this area, but my university offers different areas to specialize in as an Undergrad, so which one should I focus on in order to take classes relevant to Fastening and Joining? 1)Energy, fluid and thermal systems depth area. Includes courses in the fluid and thermal energy transport area. 2)Automotive engineering depth area. Includes courses with an automotive engineering emphasis area with two possible areas of specialty: automotive structures or internal combustion engines. 3)Manufacturing engineering depth area. This depth area includes courses in the manufacturing area. 4) Plastics and composites manufacturing engineering depth area. This depth area includes courses in the plastics and composites manufacturing area.