Brain Test Level 422 Answer
The biggest one is the elephant, Tap on it, then tap on the cat which is smaller, now tap on the middle apple to cut it and tap on the worm in it.
you can see the image hints below
Brain Test Answers (All Levels)

Brain Test Level 422 Video Walkthrough
If you read the answer and couldn’t find out how to solve it. Here is a video walkthrough of the level :
Brain Test Answers (All Levels)