Solution:
Resources refer to the materials available for our use in the environment. Resources are vital for human survival as well as for maintaining the quality of life. They are essential parts of our life and are consumed daily. The quality of life depends on the resources available.They are believed to be a gift of nature, produced by natural processes. Resources can be both natural and artificial or renewable and non-renewable. These are extracted and processed to obtain elements in their pure form. They are then used for commercial purposes. The resources are extremely important and are used optimally. Overuse can lead to resource depletion. Therefore, both (A) and (R) are true, but (R) is not the correct explanation of (A).