Why is managing crop residues better than burning them in agriculture?

Correct answer: It can be more sustainable for soil, air and resource use

The direct answer is Option A: managing residues can be more sustainable for soil, air, and resource use. Crop residue means the remaining straw, stalks, leaves, or husks after harvesting. Step 1: burning releases smoke and harmful gases, worsens air quality, and destroys organic material that could return nutrients to the soil. Step 2: instead, residues can be composted or incorporated into soil as organic matter. Step 3: suitable residues may be used as animal fodder, mulch, bedding, or a raw material for other products. Step 4: management should be appropriate to the crop and local conditions, because not every residue has the same use. Option A is correct because it recognises several environmental and resource benefits. Option B is wrong because burning does not always increase soil organic matter; it usually removes much of the material. Option C is wrong because residues often have useful purposes. Option D is wrong because proper management does not immediately make land barren. Memory cue: residue is a resource—reuse it, do not automatically burn it.