Final answer:
The meaning of line 11 from "In Memory of W. B. Yeats" suggests that Yeats's poetry exists separately from his physical being.
Step-by-step explanation:
The best analysis of the meaning of line 11 from "In Memory of W. B. Yeats": "The death of the poet was kept from his poems" is option a. Yeats's poetry exists separately from his physical being. This line suggests that Yeats's poetry is not influenced by his death, and his poems continue to exist on their own, independent of his mortal life. The line emphasizes that Yeats's poetry has a lasting impact and can stand the test of time.