Concept:Land preparation for yam follows a logical sequence from clearing the land to making ridges or mounds suitable for planting.
Explanation:The first step is clearing the land to remove weeds and bushes.
Next, stumping is done to remove tree stumps and roots from the soil.
After clearing, ploughing is carried out to loosen and turn the soil.
Harrowing follows to break soil clods and level the field.
Finally, ridging is done to create ridges or mounds where yam tubers will be planted.
This order ensures a clean, fine, and well-prepared seedbed for yam cultivation.
Answer:The correct sequence is clearing-stumping-ploughing-harrowing-ridging, which is option A.