The word from the text that helps the reader understand the meaning of the word decompose as it is used in this text is composted.
Decompose means to break into smaller components or constituent materials, or to produce this breakdown. The natural process of turning organic waste, such leaves and discarded food, into a beneficial manure that can improve plants and soil is known as composting.
Organic solid waste can be aerobically decomposed via composting. Therefore, it can be applied to recycle organic material. Compost, a humus-like substance created during the process of decomposing organic matter, is a beneficial fertilizer for plants.
Thus, the correct option is A.
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