What challenges do digital artists face? There are very few uses for digital arts.
Only art displayed in museums is seen as valuable.
Not many people have the skills required to create digital art.
It is a new form of art and does not always get recognized by critics.

C.

Explanation:

Its harder to find people to look at your art online then it is to convince and entire school to go on a field trip to the mueseum

earliest

neumes above text

neumes

colored lines

neumes

4-line staff

f, c, or g clef

notes on 5-line staff with clef

mensuration (longas and breves)

time signature (perfect or half circle)

most recent

notes on 5-line staff

modern clefs

modern note values (whole, half, quarter, and so on)

modern time signature

italian words and abbreviations for dynamics and tempo

staccato, slurs, and so on