Please help !

Question 1
What types of lines has the artist used in the painting?

Explanation:

There are many types of lines: thick, thin, horizontal, vertical, zigzag, diagonal, curly, curved, spiral, etc. and are often very expressive. Lines are basic tools for artists—though some artists show their lines more than others. Some lines in paintings are invisible—you don't actually see the dark mark of the line.

b. an anonymous prisoner from the warsaw ghetto