How do you eliminate answer choice A right away.

@philpetrina13, Happy to help! We can eliminate A right off the bat because even though the game's rules don't explicitly state that a pair of parakeets must be in, we know this has to be true based on an inference we can make from the rules. The reason there must be at least one pair of parakeets being displayed is because there are 3 male parakeets (Q, R, and S). We have a game rule that states that any two birds that are both of the same sex and of the same kind as each other cannot be caged together. Let's see what happens if we try to put all of the parakeets out so that no parakeets are displayed. We can put one of Q, R, or S in one of the out cages, and we can put one of Q, R, and S in the other out cage. However, there are only two out cages, so where does the last of Q, R, and S go? This is where we run into problems because Q, R, and S are all the same sex. Therefore, we know that at least one of Q, R, and S must be on display, so we also know that one pair of parakeets must be on display. Does this help? Let us know if you need further clarification—we're here to help!

I looked at the hypothetical ,and it allowed H-J-S-T to be together