Concept:Identifying the nationality of the poet for each poem listed in the options.
Explanation:Option A, "Piano and Drums", is written by Gabriel Okara, a Nigerian poet, so it is by an African.
Option B, "The Dining Table", is also written by an African poet belonging to the African literary tradition.
Option C, "The Schoolboy", is written by William Blake, who was an English poet, making him a non-African.
Option D, "The Panic of Growing Older", is written by Lenrie Peters, a poet from The Gambia, so it is also by an African.
Since the question asks for a poem written by a non-African poet, only "The Schoolboy" fits correctly.
Answer:C. The Schoolboy