What do we get from cereals,pulses,fruits and vegetables?

Which of the following conditions will give the most benefits? Why?
$(a)$ Farmers use high-quality seeds,do not adopt irrigation or use fertilizers.
$(b)$ Farmers use ordinary seeds,adopt irrigation and use fertilizer.
$(c)$ Farmers use quality seeds,adopt irrigation,use fertilizer and use crop protection measures.

What management practices are common in dairy and poultry farming?

How do storage grain losses occur?

Why should preventive measures and biological control methods be preferred for protecting crops?

How do good animal husbandry practices benefit farmers?