The correct option is B Autecology
Autecology, also called Species Ecology or population ecology, is the ecological study of a single species, interacting with the non-living factors of its environment. It is also the study of the characteristics of a population and how the dynamics changes over time and space. Synecology or community ecology is the study of how populations interact with each other in a community. Habitat ecology on the other hand is the study of an organisms habitat, an aspect essential for conservation of the organism