Read the following passage about responsible tourism and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to e...

Read the following passage about responsible tourism and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions from 31 to 40.

THE RISE OF PURPOSEFUL TRAVEL

        It is often said that travel broadens the mind. However, in recent years, a new wave of "purposeful travel" has emerged, suggesting that travel can also heal the planet. There is something compelling about combining leisure with conservation that makes it a powerful tool for environmental awareness.        

        [I] As you browse through travel brochures or scroll through Instagram, what kind of trips catch your eye? [II] The chances are that it's the ones offering authentic, hands-on experiences. [III] Tours that involve activities like tree planting or beach clean-ups are more likely to attract eco-conscious travelers than traditional sightseeing packages. [IV] Travel experts will tell you that modern tourists are no longer satisfied with just observing; they want to contribute. When it comes to selecting a destination, studies show that over 70% of travelers now prefer eco-friendly options. Although some critics argue that "voluntourism" can sometimes be superficial, the shift towards responsible travel does play a significant role in how we interact with local ecosystems. Organizing community-led tours to attach to travel itineraries is vital for any agency that wants to convey its commitment to sustainability to the maximum number of clients.

        It’s not only in the private sector that the power of responsible tourism is being recognized. Governments and NGOs in Vietnam are acknowledging the importance of community-based tourism in preserving natural heritage. Research into a recent project in the Mekong Delta, for example, found that it was homestay programs run by local farmers that were most effective in protecting mangrove forests. Whilst there is some apprehension amongst conservationists that increased footfall can disturb wildlife, specialists say that well-managed eco-tourism has huge potential for funding conservation efforts.

        Local communities and environmentalists have also long understood the benefits of this model. In an age of mass tourism, though, just visiting a natural site without giving back has been labeled by some as 'extractive tourism'. That is the idea that tourists will consume resources and leave waste without really thinking about the impact or engaging with the preservation efforts. The challenge for tour operators, locals, and policymakers is to develop a tourism strategy that includes breathtaking landscapes but is also comprehensive.

(Adapted from VnExpress International)

Question 31. Where in paragraph 2 does the following sentence best fit?

"This trend is especially relevant to the booming industry of eco-tourism in Southeast Asia."

         A. [I]                         B. [II]                                 C. [III]                                 D. [IV]