The pun is, "Santa arrived at the party just to the NICK of time." He's often referred to as "Saint Nick." The meaning of the pun, is, he made it to the party quick, or he made it just in time.
It’s A. the authors message
Give you their denotations.
Answer:
The kids behaved when David McLean because David wanted to take over the house and the kids might kill him.
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--Applepi101