Read the following passage 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 23 to 30.

Ecotourism is a form of tourism that emphasizes conservation, responsible travel, and the well-being of local communities. It aims to minimize the environmental impact of tourism and promote awareness of conservation efforts. Ecotourism has become particularly popular in biodiversity-rich areas, where it offers an alternative to traditional tourism, which can harm the environment and disrupt local ecosystems.

One of the main benefits of ecotourism is that it provides an economic incentive for conservation. Local communities that rely on tourism for income are more likely to protect their natural resources. Instead of engaging in activities like deforestation or hunting endangered animals, they can benefit from preserving the environment. This helps to ensure that local wildlife and habitats are protected for future generations.

However, ecotourism also has its drawbacks. Increased human activity in natural areas, even if well-intentioned, can disturb wildlife and lead to environmental degradation. Tourists may leave behind waste or introduce non-native species that threaten local ecosystems. Additionally, ecotourism projects can sometimes prioritize tourist experience over genuine conservation efforts, leading to "greenwashing," where businesses promote themselves as eco-friendly without actually supporting sustainable practices.

For ecotourism to be effective, it must be well-regulated and based on sound environmental principles. This includes limiting the number of visitors to sensitive areas, educating tourists about respectful behavior, and ensuring that a significant portion of profits is reinvested in conservation projects. When managed responsibly, ecotourism can provide a sustainable way to appreciate and protect the natural world.

In which paragraph does the writer discuss economic benefits of ecotourism?