How do paintings done in the style of Renaissance naturalism depict objects?

Which element refers to musically depicting the emotion in the words of a musical piece?

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

While fragileworks of art might be best preserved in a locked box, museums routinely display such objects. why do museum professionals feel it is important to share these artifacts?