Final answer:
The park with the greatest percentage of green birds is park R with 59.38%.
Step-by-step explanation:
To find the park with the greatest percentage of green birds, we need to calculate the percentage of green birds in each park. We can do this by dividing the number of green birds in each park by the total number of birds in that park, and then multiplying by 100.
For park P, the percentage of green birds is (18/82) x 100 = 21.95%.
For park Q, the percentage of green birds is (39/88) x 100 = 44.32%.
For park R, the percentage of green birds is (38/64) x 100 = 59.38%.
For park S, the percentage of green birds is (22/50) x 100 = 44%.
Based on these calculations, park R has the greatest percentage of green birds with 59.38%.