Final answer:
The correct answer is D) All of these are examples of systems.
Step-by-step explanation:
The correct answer is D) All of these are examples of systems. A system is a group of interacting components that work together to perform a specific function. In this case, all of the options listed are examples of systems:
- A leaf is part of a plant system, which includes the stem, roots, and other parts.
- A river drainage basin is a system that includes the river, its tributaries, and the surrounding land area.
- A midlatitude cyclonic storm is a weather system that consists of low pressure, rotating winds, and precipitation.
Therefore, all of these options represent examples of systems.