The answer are variants A and C , are indirect objects in dative case.
A. Cousins C. Ben
These are indirect objects.
In the sentence, 'Give Ben and his cousins a snack before bedtime,' the indirect objects are 'Ben' and 'cousins.' Therefore, the correct options are A (cousins) and C (Ben). An indirect object indicates to whom or for whom the action of the verb is done.
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