Concept:The odd item is the one that does not belong to the same literary or regional group as the others.
Explanation:The options A, B, and D are all works by African authors.
A is an African novel by Buchi Emecheta.
B is an African play by J.C. de Graft.
D is an African novel by Isidore Okpewho.
Option C is a non-African play written by Robert Bolt.
Therefore, options A, B, and D share an African origin, but C does not.
Answer:C. A Man for All Seasons