A. It preserves the acids that help retain the color.
An abutment is the part of a structure that receives and supports the thrust of an arch or vault
Answer:
Rembrandt's self-portraits ere created by the artists looking at himself in a mirror, and the painting and drawings therefore reverse his actual features. In the etchings the printing process creates a reversed image, and prints therefore show Rembrandt in the same orientation as he appeared to contemporaries.
Explanation:
