Read the passage below carefully, and then choose the best answer:
Getting Closer to Nature at National Parks
In modern times, we seem to be getting more separate from nature with each passing day. Most of us spend the majority of our time indoors, typing away at computers and fiddling with digital devices. All the while, we are destroying the planet’s natural beauty by cutting down forests and building cities in their place. In an effort to preserve nature for future generations, national parks were created. The primary function of national parks is conservation. In many cases, it is a matter of national pride for countries to protect their indigenous species. Although several nations considered opening national parks, the US was the first country to officially do so when Yellowstone Park opened in 1872. This designation made the federal government responsible for taking care of the territory. Soon after, national parks started to open in Australia, New Zealand, Europe, and eventually across the globe. Today, almost 100 countries have established their own national parks. In total, there are over 6,500 worldwide. There are several incredible national parks that have a lot to offer. Kruger National Park in South Africa at 19,633 square kilometers is one of the largest game reserves. Tourists can go on safari and witness elephants, rhinoceroses, lions, and several other large mammals in their natural environments. At 75,000 square miles, the Northeast Greenland National Park is the world’s largest. In fact, it is larger than all but 30 countries in the world. Despite differences in names, location, and rules, most natural parks have certain traits in common. For one, they are usually open to visitors throughout the year. Those who come to the park can take part in a wide scope of outdoor activities including hiking, camping, cycling, bird watching, and fishing. Other options may include horseback riding, rafting, or scuba diving if the territory is suitable. In most places, visitors are encouraged not to feed the animals. The purpose for this law is twofold: to protect the animals as well as those who might feed them. Animals also have strict dietary needs, so feeding them exotic foods could make them sick. Feeding wild animals could also cause them to aggressively pester humans they encounter in the future for food. However, as long as you follow the rules, you are assured of having a great time at whichever national park you visit.
2. What is the main idea of the second paragraph?
