Final answer:
An Intra-sector system comprises multiple components within the same sector, like the skeletal and muscular systems within human physiology. The water cycle, which involves multiple sectors like oceans, atmosphere, and biosphere, is not an intra-sector system as it's a broad interaction driven by solar energy and gravity across Earth's systems. Option A is correct.
Step-by-step explanation:
The system that is composed of multiple components from the same sector is known as an Intra-sector system. The options given, such as the skeletal system and muscular system, or the cardiovascular system and the urinary system, are examples of different systems within the body that work closely together but are still distinct systems.
Therefore, the answer A, which includes the skeletal and muscular systems, would be an example of two components that could make up an intra-sector system within the broader context of human physiology.
On a planetary scale, the water (or hydrologic) cycle illustrated in your question is an example of a single, cohesive system, not an intra-sector system, as it encompasses several processes and reservoirs that interact with multiple sectors of the Earth's system, such as the oceans, atmosphere, glaciers, and biosphere. This wide-ranging interaction is driven by solar energy and gravity and involves the movement of water in various forms including liquid, solid (ice), and vapor.