and the easiest to explore. over the years, it has been paved, lit with electric lights, and made…

and the easiest to explore. over the years, it has been paved, lit with electric lights, and made wheelchair-friendly. today, a person can tour its many rooms without even breaking a sweat.\n3. spider cave is another of the 118 caves, but dont mistake its level of difficulty. its not a leisurely stroll. people who explore spider cave will find no lights, no sidewalks, and no mercy. a trip through spider cave is a series of tight, dirty crawls followed by high, sweaty climbs. spider cave is a limestone maze that gives even experienced cavers trouble!\n4. if youre planning a trip to carlsbad caverns national park, be prepared. you never know what you might get yourself into.\nhow does the author share the central idea of paragraph 3?\na by saying that spider cave is dirtier than most caves\nb by describing spider cave as just one of many caves\nc by saying that spider cave has no lights or sidewalk\nd by claiming that spider cave is easy to explore
Answer
Brief Explanations:
The paragraph emphasizes the difficulty of Spider Cave. Options A and B do not directly relate to the central idea of difficulty. Option D is incorrect as the text says it's not easy. Option C, by stating "no lights or sidewalk", helps convey the challenging nature (as opposed to the easier - to - explore cave mentioned before).
Answer:
C. By saying that Spider Cave has no lights or sidewalk