Gives orangutans more energy and increases their population.

Gives orangutans more energy and increases their population.

• A. Logging
• B. Planting more fruit trees
• C. Building roads
• D. Introducing predators

Answer: (D)

The main idea is that more energy from food supports bigger populations. When orangutans have access to more energy—through plentiful fruit, for example—they can grow, reproduce more, and survive better. Planting more fruit trees directly increases their food supply, giving individuals more energy to invest in growth and reproduction, which helps the population grow. In contrast, logging removes fruit trees and other habitat, reducing available energy; building roads fragments habitat and disrupts access to food; introducing predators raises mortality and stress. So those options would not boost energy or population; they would tend to do the opposite.

The main idea is that more energy from food supports bigger populations. When orangutans have access to more energy—through plentiful fruit, for example—they can grow, reproduce more, and survive better. Planting more fruit trees directly increases their food supply, giving individuals more energy to invest in growth and reproduction, which helps the population grow.

In contrast, logging removes fruit trees and other habitat, reducing available energy; building roads fragments habitat and disrupts access to food; introducing predators raises mortality and stress. So those options would not boost energy or population; they would tend to do the opposite.