Which internal control procedure adressed the possibilibity of collusion among dishonest employees?

Question

1)use of prenumbered documents

2)physical controls

3)fidelity bonding

4)separation of duties

Answer 1

1)use of pre-numbered documents with uneven audit/checking.

2)physical controls viz. joint custody.

3)fidelity bonding with deferred salary.

4)separation of duties over distant locations.

The most important is uneven checking and audits.