Final answer:
The expense of paying $50 per hour for table clearing would be denied by the reasonableness test as it's far above the typical market rate for such a job.
Step-by-step explanation:
If a restaurant owner paid their child $50 per hour to clear tables in the restaurant, the expense would most likely be denied by the reasonableness test. This test assesses whether the amount paid in wages is reasonable in relation to the services performed. In this case, $50 per hour is far above the market rate for a table-clearing job, which is typically a minimum wage position.