This question is based on selected poems from R... - JAMB Literature 2000 Question

This question is based on selected poems from R. Johnson and D. Ker et al (eds.): New poetry from Africa;Wole Soyinka (ed.): Poems of Black Africa; K.E. Senanu and T. Vincent (eds.): A Selection of African poetry; M. Umukoro and A Sani et al (eds.): Exam Focus: Literature in English; A.E. Eruvbetine and M. Jibril et al (eds.): Longman Examination Guides: Poetry and E.W. Parker (ed.): A Pageant of Longer Poems.
In Wole Soyinka's Telephone Conversation, the dominant literary technique deployed is