Step 1: Understanding context.
In the poem, the Koel suffers seeing happiness or beauty in the neighbouring garden.
Step 2: Option analysis.
(A) dry garden: Incorrect.
(B) wet garden: Incorrect.
(C) green garden: Incorrect.
(D) neighbouring garden: Correct.
Step 3: Conclusion.
Answer is (D) neighbouring garden.
“One of these days you’re going to talk yourself into a load of trouble,” her father said aggressively. What do you learn about Sophie’s father from these lines? (Going Places)