Answer: 15. A. with the cost of production being “far less than any [comparable] vegetable or animal fat,” according to the Malaysian Palm Oil Council.
Explanation: Option A provides evidence to support the point made in sentence 5, which is that palm oil production is inexpensive. The phrase "far less than any [comparable] vegetable or animal fat" adds specific details to the claim and provides a source, the Malaysian Palm Oil Council, to give credibility to the information.
16. D. Because forests must be cleared to make way for the planting of new palm trees,
Explanation: Option D effectively connects the two ideas in the sentence by showing the causal relationship between clearing forests and planting new palm trees. The conjunction "because" makes it clear that one event is the reason for the other.
17. A. While the plight of animals might not be important to everyone, it is important to note that plantations consistently destroy the habitats of endangered species, such as orangutans.
Explanation: Option A qualifies the statement made in sentence 10 by acknowledging that not everyone might have the same concern for animal habitats. The phrase "while the plight of animals might not be important to everyone" shows that the statement is not absolute. The writer then goes on to provide specific evidence of the negative impact of palm oil plantations on endangered species, such as orangutans.
18. B. Many people in Indonesia and Malaysia earn a living thanks to palm oil production.
Explanation: Option B expands on the concession in sentence 13 by providing an example of a positive aspect of palm oil production. The phrase "many people in Indonesia and Malaysia earn a living" shows that palm oil production has a real-world benefit for people, not just negative consequences.