There are 18 books in the series.
Answer:The use of oil paints to create highly realistic details.
Explanation:
The Northern International style was characterised by detail and symbolism within the object, the concern for both accuracy and great detail was their primary concern; this was a Gothic Style in Medieval art, it's imagery was predominantly religious and eventually gave way to the Early Renaissance style of painting and sculpture.
C because subjunctive usually means, because of this; this happens
