Concept:Agricultural development modernises farming, raising output and agro-processing, but it does not increase the farm workforce.
Explanation:Better farming creates surplus raw materials, which boosts processing of produce.
Improved methods and inputs raise overall food production.
Efficient techniques increase productivity per unit of land or labour.
Modern agriculture reduces dependence on manual labour, so it does not enlarge the agricultural labour force.
Thus, statements I, II and III are true.
Answer:A. I, II and III only