Which of the following best defines 'Remote Sensing'?

The definition of 'Remote Sensing' is accurately captured as the process of collecting information about an object from a distance. This encompasses a variety of techniques and technologies, including satellite imagery and aerial photography, that enable the observation and analysis of geographical and environmental phenomena without needing to be in direct contact with the area or object being studied.

This approach allows for comprehensive data gathering over vast areas and provides insights that are crucial for numerous applications, such as environmental monitoring, urban planning, agriculture, and disaster management. Remote sensing can utilize different parts of the electromagnetic spectrum, which can help in identifying specific characteristics of the Earth's surface.

While other options pertain to aspects of data collection or analysis, they do not encompass the full scope of remote sensing. For instance, ground-based systems are not classified as remote because they involve direct observation, and the use of drones, while a form of remote sensing, is not the defining characteristic. Image processing by human analysts, on the other hand, relates more to the stages following data collection rather than the act of remote sensing itself. Thus, the most accurate definition remains that it's about collecting information about objects from a distance.