The correct answer is "The farm was such a paradise that even animals that are enemies got along." we can confirm this answer in the poem with the major theme that is "Returning to the place where you were happy as a child" in this particular poem called "Fern Hill" the speaker talks about missing the good old times when he was a kid in a farm. In the poem the character is older so there is a childlike wonder throughout most of the poem. He told us that it was a great life as a paradise when he was a child in a peaceful and green place such as a farm.
In this phrase, we see foxes and pheasants are no longer enemies, even if they were chasing each other but the speaker is between them remembering how good was the farm that changes everything for him. He has adored, respected and wanted on the farm. So the answer: "Foxes and pheasants were raised on the farm" is not correct they serve here as a metaphor. It's not that the speaker was good at working with the animals as he was remembering his good times and not talking about working with animals. And finally, it's not that the speaker didn't pay attention to animals because he always was out playing because in this particular phrase he is talking about how he was loving in a good place where everything was good.
