SAT English Practice Question

The process of composting has become increasingly popular in recent years, as people seek to reduce waste and improve soil health. Home composting involves breaking down organic materials, such as food scraps and yard waste, into a nutrient-rich soil amendment. The process typically involves layering materials in a container, keeping them moist, and turning them regularly to promote aeration. Once the composting process is complete, the resulting compost can be added to gardens or flower beds. What is the purpose of the sentence, "The process typically involves layering materials in a container, keeping them moist, and turning them regularly to promote aeration."?

1. A.provide an example of a successful composting project.
2. B.offer a detailed description of the composting process.
3. C.introduce the concept of composting to the reader.
4. D.compare home composting to other methods of waste management.