What do you call someone who creates soundtracks for movies?

What function should you choose if you want to make a copy of a digital image file to back it up? a) save b) copy c) save as d) all of the above

Which statement about roman art is true? a. roman art matured during the hellenistic era in which the refinement and restraint seen in greek art had given way to dynamic poses and strong emotions. b. the romans believed in showing idealized portrayals of the human body as characterized by the elegance seen in the statue venus de milo. c. the romans always portrayed their emperors as powerful, absolute rulers as seen in the colossal head of constantine.

What does bts stand for? what is the importance of bts? who first started it?