Final answer:
The correct option is b. According to the ideal free distribution, individuals are expected to move into low-quality habitats when the per capita benefit of the low-quality habitat equals the per capita benefit of the high-quality habitat.
Step-by-step explanation:
According to the ideal free distribution, individual organisms are expected to move into low-quality habitats when the per capita benefit of the low-quality habitat equals the per capita benefit of the high-quality habitat.
This means that when the quality of the low-quality habitat increases to the same level as the high-quality habitat, individuals will start to move into the low-quality habitat. According to the ideal free distribution, individuals are expected to move into low-quality habitats when the per capita benefit of the low-quality habitat equals the per capita benefit of the high-quality habitat.