Name the poet who has composed the following poems:
(a) The Divine Image
(b) The Holy Thursday
(c) The Little Boy Lost
(d) The Little Boy Found

The correct option is William Blake.

To understand why this is the correct answer, let us look at the literary collection where these poems are found:
The poems listed in the question—"The Divine Image", "The Holy Thursday", "The Little Boy Lost", and "The Little Boy Found"—are all famous poems written by the English poet and artist William Blake (1757–1827).

These specific poems were published in his seminal illustrated collection of poems titled Songs of Innocence and of Experience (first released as Songs of Innocence in 1789, and later combined with Songs of Experience in 1794).
Specifically:
• "The Divine Image", "The Holy Thursday" (Innocence version), "The Little Boy Lost", and "The Little Boy Found" all originally appeared in the Songs of Innocence section, reflecting themes of childhood, divine love, and Christian pastoral symbolism.

Therefore, the poet who composed all four of these poems is William Blake.