Choice "C" is correct. In a search for unrecorded disposals, the auditor would vouch a sample of assets on the property ledger to those on hand in the client's facility.
Choice "a" is incorrect. By touring the facility first, and then comparing assets found to those recorded on the property ledger, the auditor is testing the completeness of the property ledger, a procedure used to search for unrecorded additions.
Choice "b" is incorrect. Analysis of the repair and maintenance account is useful in identifying transactions that should have been capitalized versus expensed (i.e., unrecorded additions).
Choice "d" is incorrect. Analysis of the repair and maintenance account is useful in identifying transactions that should have been capitalized versus expensed (i.e., unrecorded additions).