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John has invited 20 friends from school to his birthday party. Even though all children in John's country invite their siblings to their birthday party, no brother or sister of John's will be attending.
Which of the following, if true, would most contribute to an explanation of the facts above?
The fact that only John's closest friends were invited still doesn't explain why John's siblings will not be there, even though it is customary to invite one's brothers and sisters to one's birthday.
The fact that John's father cannot come does not explain why John's brothers and sisters will not be there.
If John doesn't have any brothers or sisters, there is absolutely no way they can come. This answer choice effectively resolves the paradox between the premises.
John's reluctance does not resolve the paradox: if everyone invites their brothers and sisters to their birthday party, why wouldn't John's brothers and sisters be there?
The date chosen for the party does not, in itself, explain why John's brothers and sisters won't be there.