Which sentence is most relevant to include as the beginning of her next paragraph? 1. Opponents of ecotourism argue that the increase in the number of ecotourism has actually caused damage to fragile ecosystems.
2. Those who are not in favor of ecotourism argue that most people do not want to be ecotourists and prefer to travel to more popular destinations.
3. Those who are not in favor of ecotourism argue that such trips are very costly, and yet ecotourism often have to stay in very basic accommodations.
4. Opponents of ecotourism argue that trips to remote ecosystems typically last only a week or so, and thus ecotourism have to return home before they are ready.