help explain why these answers are correct in full detail

$1.$ in testing the existence assertion for an asset, an auditor ordinarily works from the

$-$accounting records to the supporting evidence

$2.$ auditors should design the written audit plan so that

$-$the audit procedures selected will achieve specific audit objectives

$3.$ an auditor assesses the risk of material misstatement because it

$-$affects the level of detection risk that the auditor may accept

$4.$ the acceptable level of detection risk is inversely related to the

$-$assurance provided by substantive tests

$5.$ in the planning stage, analytical procedures are used to

$-$identify potential problem areas

$6.$ when an auditor increases the planned assessed level of control risk because certain control activities were determined to be ineffective, the auditor would most likely increase the

$-$extent of substantive tests of details