Since nothing is underlined i presume that the underlined pronoun is them. It is in the dative case because them is an object and answers the question to whom was something done. Them refers to the trainer's team.
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i think its A but lmk if wrong
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Need more information for this
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Well at first everyone was depending on Casey and he did not want to let them down but the pitcher had other ideas, Um im not really sure about anything else sorry I tried
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