Graphite sticks became popular among artists for which of the following reason(s)?

a. They could make both light lines and bold, dramatic lines.
b. The lines could be easily erased.
c. They allowed for a more experimental type of drawing.
d. They were more conducive to creativity.
e. All of these are correct.

e. All of these are correct.

a. Incorrect. While it is true that graphite sticks could make both light lines and bold, dramatic lines, this is not the complete answer.
b. Incorrect. While it is true that the lines of graphite sticks could be more easily, this is not the complete answer.
c. Incorrect. While it is true that graphite sticks allowed for more experimental type of drawing, this is not the complete answer.
d. Incorrect. While it is true that graphite sticks were more conducive to creativity, this is not the complete answer.
e. Correct. Graphite sticks introduced a number of new possibilities for artists.