What is the author's likely conclusion about composting and soil health?

• A. Composting can improve soil health and reduce waste when implemented properly.
• B. Composting is unnecessary in modern farming.
• C. Soil health is not linked to composting.
• D. Composting is too costly to implement.

Answer: (A)

The main idea tested is that composting, when done properly, can improve soil health and reduce waste. Compost adds organic matter and nutrients to the soil, supports a healthy microbial community, and improves soil structure, water retention, and nutrient cycling. When implemented correctly—with proper aeration, moisture, temperature management, and enough curing time—these benefits are realized while waste is diverted from landfills. This makes it the best answer because it captures both the positive impact on soil health and the environmental benefit of waste reduction. The other statements don’t fit because they minimize or negate benefits, suggesting composting isn’t useful, isn’t linked to soil health, or is prohibitively costly, which goes against the typical emphasis on composting as a practical way to boost soil quality and recycle organic waste.