Final answer:
The description of the intensity of a behavior falls under topographical assessment, which defines the form, frequency, and intensity of a behavior, contrasting with functional and ecological assessments.
Step-by-step explanation:
The description of the intensity of a behavior is a part of its topographical assessment. A topographical assessment involves detailing the form, frequency, and intensity of a behavior. It contrasts with a functional assessment, which aims to determine the reason behind a behavior, and an ecological assessment, which evaluates the behavior in the context of the environment. Ecological assessments revolve around understanding how organisms interact with their physical and biotic environments, which includes the study of species distributions and is often applied in conservation biology. Functional assessments are used to identify the function a behavior serves for the individual within their environment, which is critical to shaping appropriate interventions or responses.