Final answer:
A resource is something valuable and useful to people, either found in nature or created by humans.
Step-by-step explanation:
A resource refers to something that is valuable and useful to people. It can be something found in nature, such as minerals, water, or forests (option A), or something that is created or produced by humans, such as tools, technology, or knowledge (option C). Resources can be both valuable and useful because they meet our needs and wants, and they can be used to satisfy our desires or improve our lives (option D).
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