A toy manufacturer receives certain components from an overseas supplier and uses them to assemble final products. Recently, quality reviews have identified numerous issues regarding the components compliance with mandatory quality standards. Which type of engagement would be most appropriate to assess the root causes of the quality issues?

a. A risk assessment

b. An operational audit

c. A third-party audit

d. A fraud investigation

Which of the following is the advantage of using internal control questionnaires as part of a preliminary survey for an engagement?

a. ICQs provide testimonial evidence

b. ICQs are efficient

c. ICQs provide tangible evidence to be quantified

d. ICQs put observations into perspective