• backgroundcow@lemmy.world
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    4 months ago

    The right choice is (b) the filled triangle, because:

    (a) Could be the right answer based on that it is not filled

    © Could be the right answer based on that it has a different color.

    There is no equally simple reason to why (b) could be the right answer.

    And in that way it is singularly different from the other two, which are equally different.

    Ergo, (b) is the right answer.