For each of the following situations, explain whether and why having an independent review of the information provided-that is, an audit-would be useful. Who would be an appropriate person to conduct the audit?

a. Politicians are concerned that a government agency is misspending money.

b. An airline claims its flights are on time 90% of the time.

c. A farm claims to produce organic vegetables.

d. A graduate university program requests a list of grades a student earned in her undergraduate program.