To the east of the Cascades, the "Palouse" or "Inland Empire" is known for growing what crops?A) Blueberries, Oats, and grapes. B) Wheat, apples, and grapes.
C) Wheat, blueberries, and pears.
D) Pears, apples, and oats.

B) Wheat, apples, and grapes.

Explanation:

The east of the Cascades is also known as the "Palouse" or "Inland Empire". It is a an area that stretches from the Mountains' summit to the drier desert to the east.

This area is suitable for the growth of crops which requires little rainfall and was a good region for wheat production.

Other plants such as apples and grapes are also grown in the Inland Empire region.