Which step below is one that a conservator must take to preserve or restore art?

(1 point)
A-Repair the artwork using untested methods.
B-Leave a fragile piece of artwork on display for viewers to handle and touch.
C-Keep all art away from viewers for fear that it might become degraded.
D-Use scientific techniques and knowledge of art history to analyze the composition of the work.

D-Use scientific techniques and knowledge of art history to analyze the composition of the work.