Final answer:
An auditor who plans to assess control risk at a high level for a non-public entity usually performs limited or no tests of controls and extensive substantive tests of current year transactions and ending balances.
Step-by-step explanation:
When there are numerous plant asset transactions during the year, an auditor who plans to assess control risk at a high level for a non-public entity usually performs limited or no tests of controls and extensive substantive tests of current year transactions and ending balances.