Someone pls hmu, im s bored

Why were staff lines an important improvement to musical notation a. sl indicated rhythm b. sl indicated dynamics c. sl indicated pitch d. sl indicated meter

In the united states what did dot commission aiga to do? a. design collages b. design posters c. design public symbols d. design book covers

Choose the statement that best describes why textiles should not be exposed to ultraviolet rays a. ultraviolet rays fade the colors in the fabric b. ultraviolet rays will ignite the threads c. ultraviolet rays fade and weaken the fabric d. ultraviolet rays will weaken the fabric