Concept: Herbert Macaulay was imprisoned twice by the colonial government as retaliation for a legal victory he won against British officials.Explanation:Macaulay successfully defended Eshugbayi Eleko, affirming Eleko as the rightful king of Lagos. This defence was carried out in London and resulted in the humiliation of British officials. The colonial authorities resented this embarrassment and thereafter jailed Macaulay twice. Thus, the incident that led to Macaulay's imprisonment was his humiliation of British officials through Eleko's successful defence.Answer: C. the humiliation of the British officials through his successful defense of Eleko in London