In which of the following is the level of Vitamin A and K kept high?

Scientific poultry farming relies on formulated feed that is deliberately fortified with essential nutrients -- including the fat-soluble vitamins A and K -- to prevent disease, strengthen immunity, and support healthy growth in birds. This fortification is a defining feature of commercial poultry feed, distinguishing it from crop produce, parasite biology, or organic soil amendments like manure.

As the standard account of poultry farming notes, the level of vitamins A and K is specifically kept high in poultry feeds to protect birds from disease and support their growth. Among the given options, only poultry feed is characterized by this deliberate vitamin fortification, so it is the item that is rich in Vitamin A and K.

• Rice crop: its nutrient profile is dominated by carbohydrates (starch); it is not formulated or fortified with vitamins A and K.

• Parasites: they derive nourishment from a host organism and are not defined by any vitamin content of their own.

• Manure: its composition is characterized by nitrogen, phosphorus, and potassium for soil fertility, not by vitamin A/K content.