Answer:
C. Leave No Trace principles encourage people to leave areas better than they found them. These principles are in effect at Denali Park, a remote area of federally-protected wilderness. Visitors are advised to plan ahead and prepare, travel and camp on durable surfaces, and dispose of waste properly.
Step-by-step explanation:
Answers A and D show bias, so they're not objective.
Answer B is objective, but the last sentence includes details that aren't important enough to be included in a summary.
Answer C is objective and only includes the most important details.
I also just took this test and got this question right :D