Please help me with these questions:

$1.$ When auditing long term debit, auditor consider the following audit assertions:

a$.$

b$.$ and c$.$

$2.$ An auditor's state of mind as it relates to independence is referred to as

$3.$ The objective of the Occurrence Assertion is to:

a$.$ establish transactions giving rise to assets, liabilities, sales and expenses actually$\_$ occurred.

b$.$ Establish the financial statements are complete

c$.$ Establish transactions have been valued and recorded properly.

$4.$ The particular and specialized actions that auditors take to obtain evidence during a specific audit reengagement are:

a$.$ Audit procedures

b$.$ Audit standards

c$.$ Audit principles

$5.$ An auditor is concerned with the following assertions when auditing an investment in securities:

a$.$

b$.$

c$.$ and d $.$