Out of the choices provided above, implementing an online polling tool to monitor the application and record outages would be best recommended to the IS auditor for providing to the vendor. Therefore, the option B holds true.
An IS auditor can be referred to or considered as a professional who is held responsible for the verification of the data and records provided by an organization. An auditor is expected to form a true and correct audited report, which has not been compromised in any of the ways possible.
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