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Friday, Sep 18 2015

Is it possible to post an explanation for 19/2/9?

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  • Friday, Sep 18 2015

    Hey Bertie!

    The conclusion is that the A was probably tree dwelling?

    How is it supported? The A had claws that enable modern tree dwelling birds to perch in trees.

    So, the whole conclusion depends on the type of claws A has, and what the ornithologist knows those claws are used for today. It must be the case, therefore, that the A used those claws or else the only support we have for the conclusion would be gone. This is why B must be assumed. If the A didn't use its claws, we have no basis for concluding what kind of bird A was.

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