Which author is known for writing both novels and poetry, including significant works in both forms?

The choice of Thomas Hardy as the correct answer highlights his dual contributions to both novels and poetry, making him a notable figure in English literature. Hardy is renowned for his novels such as "Tess of the d'Urbervilles" and "Jude the Obscure," which explore complex themes of fate, society, and human struggle. Additionally, he wrote a substantial body of poetry, particularly in his later years, with collections such as "Moments of Vision" and "The Dynasts," where he reflects on the human condition and existential themes.

This combination of significant works in both prose and verse distinguishes Hardy from others in the list. While Gerard Manley Hopkins and William Butler Yeats also made important contributions to poetry, their novel production is not as notable. Hopkins is primarily celebrated for his innovative poetic techniques, and Yeats, though a major poet, wrote very few prose narratives in comparison to his poetic achievements. George Bernard Shaw, mainly recognized for his plays, did not write novels, and his contribution to poetry is limited. Thus, Thomas Hardy's substantial achievements in both forms solidify his status as a versatile and influential author.