Precision agriculture can be useful for a small farmer only when which condition is met?

Correct answer: Technology cost and training suit local needs

The direct answer is B: precision agriculture can help a small farmer when its cost and training requirements suit local needs. Precision agriculture uses information, measurement, and technology to apply water, nutrients, seed, or crop protection more accurately. For a small farmer, the technology must be affordable, understandable, repairable, and useful for the available land and crops. Step by step, suitable technology plus training helps the farmer use information correctly; better timing and accurate use can reduce waste and improve efficiency; if the equipment is too costly or difficult, it may create debt or remain unused. Option A is wrong because weather information can help planning and should not be absent. Option B is correct because affordability and appropriate training make the technology accessible. Option C is wrong because stopping crop sales removes income and does not make technology useful. Option D is wrong because crops need appropriate water; leaving all fields without water is not a condition for precision farming. The exam cue is “appropriate technology”: useful, affordable, locally suitable, and understandable.