Provide an Appropriate Response $\frac{3}{8}$ B) $\frac{3}{4}$ C) $\frac{1}{4}$ D) $\frac{3}{10}$

Provide an appropriate response.
-What fraction of the diagram is shaded?

A) $\frac{3}{8}$
B) $\frac{3}{4}$
C) $\frac{1}{4}$
D) $\frac{3}{10}$