If the base runner leaves the base before the ball is caught in the outfield, what should the defence do?

Well it depends

Explanation:

If the runner leaves the base before

the ball is caught the defence cannot do anything exept  

catch the  ball if they catch the ball while he is still running he has to get back to the base before they could tag him or the base if they tag him or the base before he can get back to his base he is out if they did not  catch the ball the runner can run as long as he wants just cant get taged the defence has to get the ball in as fast as possible to get the runner out.

depends on what you mean by "group." for order, it would be coleoptera (beetles). for class, it would be insecta (insects). for phylum, it would be the arthropoda (animals with jointed exoskeletons).

explanation:

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