the quizz is rather vague,
They decide to compete to see who is the fastest to get a banana off the tree.
There is no indication in the question that the banana on the coconut was a result of botanical orocess or was just put up there by someone say kunguru was zanzibar.
Secondly lions are never fond of bananas unless there are changes nowadays in the behavior of animals.
They decide?????????, these animals has nothing in common to decide on one banana.
At the end i dont see an answer here as someone can put a banana on a coconut tree.