Rice is a cereal grain and the staple food for a large part of the human population. People eat rice in some form daily in East, South, and Southeast Asia; the Middle East; Latin America; and the West Indies. There are many types of rice found in many corners of the world.
Basmati rice, cultivated in the foothills of the Himalayan mountain ranges for centuries, gets its name from the sweet smell of its long, white grains. Basmati rice or "pearl of scents" is popular around the world and is used in many traditional rice dishes in south Asia.
Another variety of rice with aroma is Jasmine rice. This white rice is a bit sticky and is grown in Thailand. Jasmine rice is an excellent choice in Thai curries and Vietnamese dishes. Arborio, or Italian short-grain white rice makes the famous risotto dish. It is creamy with a great ability to absorb flavors. Arborio is also used in stews and soups.
In fact, wild rice, the only type of rice native to North America, is not actually rice but a grain. It is the staple food of the Native Americans. Wild rice comes from the seeds of a water grass. The grains are long and dark brown in color.

Which of these best explains the organizational structure used in this passage?
A.
sequence, because it shows a timeline of the popularity of rice
B.
classification, because the author divides rice into various groups
C.
definition, because it defines the concept of rice as a staple food
D.
cause/effect, because it describes the influence of rice in Asia