Final answer:
Approximately 75% of all emerging diseases are thought to have originated through land use changes, emphasizing the impact of human encroachment on wild habitats in disease transmission (c).
Step-by-step explanation:
The subject of the question pertains to the origins of emerging diseases in relation to land use change. It is mentioned that the transition of diseases to humans is often due to an increase in human presence in wilderness areas where they come into contact with the animal hosts of these diseases. A significant percentage of human diseases have been identified as emerging this way, including severe diseases like monkeypox, malaria, HIV, and Ebola.
Approximately 75% of all emerging diseases are thought to have originated through land use changes and the increasing encroachment of humans into natural habitats. This high proportion demonstrates the profound impact that environmental changes and human activity can have on public health.