Concept:Agriculture supports economic development in many ways, but its most direct role from the given options is creating jobs.
Explanation:Agriculture employs a large share of the Nigerian labour force.
It offers work in crop production, livestock rearing, fishing, and related activities.
These activities provide income and livelihoods for many rural families.
Processing raw materials is mainly an industrial function, not a primary agricultural role.
Price regulation and infrastructure provision are usually government responsibilities.
Therefore, the key developmental contribution of agriculture here is the provision of employment.
Answer:D. provision of employment