Final answer:
Ants thrive in high-density populations due to their highly social nature, whereas rhinoceroses require low-density populations to have access to the large amounts of resources they need.
Step-by-step explanation:
When discussing population density, we're referring to the number of individuals of a species that occupy a specific area. In context with the question at hand, ants are known to be highly social animals that depend on group cooperation to survive. Therefore, ants typically live in high-density populations where such social interactions can be facilitated. On the other hand, rhinoceroses, which are larger and require more resources, usually live in low-density populations. This is because dense living conditions could create intense competition for limited resources like food and space, which these large animals need in greater quantities.
To answer the student's question directly:
- Ants should live in high-density populations, and
- Rhinoceroses should live in low-density populations.
Thus, the correct answer is c. high-density; low-density.