The person who is in charge of the CAPTCHAS are actually East Indian computer programmers practicing their English.
They generate questions for you to solve: In OP's example, we see a CAPTCHA behaving as some sort of guardian, when in reality it's a cleverly disguised ruse by an East Indian who's learning English. The real purpose of a CAPTCHA is to trick regular Americans on the internets to help East Indians learn English by the East Indian posing a question (in this case, a palm tree) and the American confirming that palm trees are what's depicted in the properly selected pictures.
There is no proof to the contrary so don't attempt to prove me wrong.
