Answer:
You would most likely use burin when you want to make a wood engraving.
Explanation: Burin is a tool used by people who make woodcuts. It has a shaft and a pointed diamond-shaped tip that facilitates this work.
B. Current account ...I believe because it records net trade in good,services and net earnings
The Emperor Justinian I can be linked to the monastery of St. Catherine at Mt. Sinai.
Saint Catherine's Monastery is located in Egypt, on the Sinai Penninsula, and was founded by Justinian I, a Byzantine emperor. The monastery is part of the Eastern Orthodox Church, and was built in honor of Catherine of Alexandria, a famous martyr.
Ummm what? I assume you mean what are aesthetics, if so it is makeup and things to make things look better. <span />