explain why these answers are correct in full detail

$1.$ aclients internal control system may be documented by the auditor through the use of

$-$all of the above $($questionnaries$,$ flowcharts, narratives$)$

$2.$ the internal control in small business is highly dependent on the

$-$owner$-$managers competence, as well as his$/$her ethics and integrity

$3.$ if auditors assess control risk at the maximum level, they will tend to

$-$perform a great deal of substantive testing during the audit

$4.$ proper seperation of duties reduces the opportunities to allow persons to be in positions to both

$-$perpetrate a fraud and then conceal it in the books