What is the answer to this question?
Fine the odd one out..
Jupiter. Uranus. Mercury. Earth.
Ans: answer is Mercury, as it doesn't have it's own satellite...
But Earth could also be the answer right? As it is the only planet with life forms.. or Uranus as it has a ring around it..
The question is indeed very vague and your alternate answers do make sense... but if the answer key says that it is Mercury, then i guess there's no other option than to learn it that way...