And of course there are multiple answers that make sense.
That's par for the course for an IQ test. It isn't about finding the right answer. It is about trying to find the answer that you think they are most likely looking for. Which sometimes means trying to second-guess the examiner's style and giving a different answer than the one that YOU think is right.
What is worse is that they have so many that are clumped. If you don't figure out what they want, you'll get a whole bunch wrong in a row. That'll limit the precision of the test if they ever do get it scaled.
Cheers,
Ben