Answer:
i don't think so
i ask myself the same question, im 6'2" and I dont think it will stunt your growth. If you lived with weights on your back, im sure that would stunt it though. Just weightlifting probably wont keep you from growing
No. It will only make you stronger.
You'll never know unless you try it, what are you waiting for, get lifting those weights!
it can stunt your growth but since your 15, it should be okay, if you were younger, your growth plates might stop growing if you worked out