Concept:Wastage of farm produce means loss of harvested crops due to spoilage or damage after harvest.
Explanation:Poor transportation can damage produce while moving it to the market.
Inadequate processing facilities leave produce untreated and prone to spoilage.
Inadequate storage facilities expose produce to pests, moisture, and decay.
Use of crude farm tools is a problem of farm operations and mechanisation, not a direct cause of wastage of harvested produce.
Therefore, crude farm tools do not cause wastage of farm produce.
Answer:A. Use of crude farm tools