Usable materials that man can obtain from the physical world are called....

A.Fertilizers
B.Renewable resources
C. Natural Resources
D. Fossil Fuels

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C. Natural Resources

The correct answer is C. Natural Resources. Natural resources refer to materials or substances that come from the Earth and are valuable to humans due to their usefulness and economic value. They can be obtained from the physical world and include various types of resources like minerals, water, air, soil, plants, and animals.

To confirm this answer, you can search online for the definition of natural resources. One way to do this is by using a search engine like Google. You can go to http://www.google.com and enter the following search query in the search bar: "define Natural resources".

Clicking on the search button will display search results that include the definition of natural resources from various online sources such as dictionaries, glossaries, or educational websites. You can click on one of the search results with a trustworthy source, such as a reputable dictionary or academic website, to find the definition and confirm that the correct answer is indeed C. Natural Resources.