Concept:Cassava requires extensive processing to remove toxic substances before it is safe for animals.
Explanation:Cassava, especially bitter varieties, contains hydrocyanic acid (
HCN), which is poisonous to animals.
It must be peeled, soaked, dried, and ground to reduce or remove this toxin.
Sorghum, maize, and groundnut can be fed with little or no special processing.
Thus, cassava demands the most preparation among the listed feedstuffs.
Answer:A. cassava