M and T are two inexperienced geologists. That means we need two experienced radiobiologists. And we also need L, because we don’t have P.
So we need L, and could have either J or K.
B is CORRECT. J could be chosen but doesn’t have to be.
We can’t choose F (answer A). We have to choose L (answer C). We can’t choose N, because we already have enough inexperienced astronauts (answer D.) Same for P (answer E).
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