Select the correct answer. Which text structure has the author of this passage used?

Every year, nearly 1.2 million acres of land burn in wildfires. While lightning and other natural occurrences cause some of these fires, humans are to blame for 90 percent of wildfires. Campfires, equipment, and other human activities can ignite fires that end up spreading due to dry leaves, needles, branches, and weather conditions. Wildfires can help the ecosystem when they are contained, but they can also damage an area, making it difficult for the land to heal on its own and increasing erosion and landslides.

A.
cause and effect
B.
problem and solution
C.
compare and contrast
D.
chronological order

In which part of this excerpt from the gettysburg address does president abraham lincoln argue that the outcome of the war will depend on the determination and loyalty of northern citizens? four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in liberty, and dedicated to the proposition that all men are created equal. now we are engaged in a great civil war, testing whether that nation, or any nation so conceived and so dedicated, can long endure. we are met on a great battle-field of that war. we have come to dedicate a portion of that field, as a final resting place for those who here gave their lives that that nation might live. it is altogether fitting and proper that we should do this. but, in a larger sense, we can not dedicate—we can not consecrate—we can not hallow— this ground. the brave men, living and dead, who struggled here, have consecrated it, far above our poor power to add or detract. the world will little note, nor long remember what we say here, but it can never forget what they did here. it is for us the living, rather, to be dedicated here to the unfinished work which they who fought here have thus far so nobly advanced. it is rather for us to be here dedicated to the great task remaining before us— that from these honored dead we take increased devotion to that cause for which they gave the last full measure of devotion—that we here highly resolve that these dead shall not have died in vain—that this nation, under god, shall have a new birth of freedom—and that government of the people, by the people, for the people, shall not perish from the earth.