Identify key signature this is for my music video project thing thats due tmrw and i dont get the question at all so plz help me T_T

Sound waves can travel only in the aira. trueb.false

Ar 5)when providing general information about an artwork, how is the title indicated? a)"title of artwork" b)title of artwork c)title of artwork d)title of artwork 6)select the term that refers to what the artwork is made of. a)iconography b)medium c)form d)context

What role do background vocalists play? a. they provide additional support to the main vocalist and other members of a music group during recording sessions and live events. b. they perform as part of orchestras working for music theaters. c. they mix different songs or music scores and present a unique blend of music to an audience. d. they assemble and organize musical compositions according to their clients’ requirements.