Here banana is fired from the canon towards the monkey with certain velocity
while at the same instant when banana is fired money starts to fall from the tree
So here when monkey is in the mid air he catches the banana
It is possible because in the same interval of time when the monkey cover some distance from the tree towards ground then in the same time banana cover the distance from ground towards monkey
So they meet at some point in the mid air
So here since both are moving free in air so they both must have same vertical acceleration
this is acceleration due to gravity
so here correct answer will be
C. The banana and monkey had the same acceleration.