Which statement best explains how the organization of the passage helps clarify the ideas expressed in the passage?
Federal Duck Stamp
When the explorers first set foot in North America, the land and skies teemed with an astonishing variety of wildlife. Within a few decades, these resources had been decimated. Millions of birds and other wildlife were killed, some species to the point of extinction. Market shooting to supply food to restaurants, bounty hunting and unregulated sport hunting, and collecting feathers for the fashion industry all contributed to the loss. Millions of acres of wetlands were drained to feed and house the ever–increasing population, greatly reducing waterfowl breeding and nesting habitat. Mother Nature has taken her toll with devastating droughts and floods that affect bird migration rest areas and wintering grounds. And climate change has the potential to alter bird populations in North America; estimates are that more than 300 species will be driven to smaller spaces or forced to find new places to live, feed and breed over the next 65 years. As well as providing habitat for wildlife, wetlands help maintain ground water supplies, filter pollutants, store flood waters, provide nurseries for many food sources, and protect shorelines from erosion. These provide important benefits to neighboring human communities. By buying Federal Duck Stamps, you can make a difference by providing wildlife habitat in your own community.

BORN IN THE DUST BOWL DAYS
In 1934, President Franklin D. Roosevelt signed the Migratory Bird Hunting Stamp Act (or Duck Stamp Act), and an increasingly concerned nation took firm action to stop the destruction of wetlands vital to the survival of migratory waterfowl. Under the act, all waterfowl hunters 16 years of age and over must annually buy and carry a Migratory Bird Hunting and Conservation Stamp – better known today as a Federal Duck Stamp. Ninety–eight cents of every duck stamp dollar goes directly into the Migratory Bird Conservation Fund to purchase or lease wetlands and wildlife habitat for inclusion in the National Wildlife Refuge System. This ensures there will be land for wildlife and humans that will be protected for generations to come. Since 1934, some $800 million dollars has gone into that fund to protect more than 5.7 million acres of habitat. Little wonder the Federal Duck Stamp Program has been called one of the most successful conservation programs ever initiated. One of the reasons for the Duck Stamp's success is that anyone can buy the stamp, which can also be used as an annual "pass" to national wildlife refuges charging entrance fees.

WHY BUY DUCK STAMPS?
Conservationists buy duck stamps because they know that 98 percent of the cost goes directly to conserve wildlife habitat vital for many birds, fish, mammals and plants, and you and your family – and future generations. This small investment brings long–term returns. Stamp collectors purchase the stamp as a collectible that increases in value. Hunters, who strongly advocated for the Duck Stamp's creation, willingly pay the stamp price to ensure the survival of our natural resources. And many hunters buy two duck stamps each year – one for hunting and one as a collector's item and an additional contribution to conservation. The Federal Duck Stamp has evolved over its more than 80 years of existence. In recognition of the stamp's growing value as a conservation tool, its formal name was changed to the Migratory Bird Hunting and Conservation Stamp.


A) It presents historical information in chronological order throughout the text.
B) It includes rhetorical questions to introduce each of the passage's main ideas.
C) It explains background information about an issue and then presents new facts.
D) It provides an introduction and uses main headings to break down key ideas.