Concept: The above-given statement is true

• Although plants use photosynthesis to create organic carbon, specific types of nutrients are necessary for their overall growth and development.
• For their growth and development, all plants, especially crop plants, rely on organic matter and inorganic minerals.
• It results from the decay of extinct plants and animals. The decomposing fungus and bacteria in the soil are responsible for this organic matter's degradation.
• By improving the soil's nutrient content and water-holding ability, the organic matter also maintains the soil's quality. As a result of its abundance in organic matter, manure is frequently applied to crop plants.

Hence, option A is true.