please help me with these three study questions

thank you

1. what is one of the best ways to improve the overall efficiency and effectiveness of the receipt and storage of ordered items?

a. use evaluated receipt settlement (ERS) to pay supplier

b. inspect goods at the suppliers factory before they are shipped

c. requiring all suppliers to include RFID tags on their items

d. requiring all suppliers to use EDI to send shipping data to the receiving department.

2. which of the following suggests a weakness in a company's internal inveronment?

a. managent selects the external audit firm and the external auditors address their report to management.

b. the company has a formal delegation of authority matrix

c. the company has an up-to-date organizational chart

d. employees are required to attend ethicks training each year.

3.which of the following controls is most effective in reducing the threat of company employees stealing customer payments on account?

a. immediately after opening the mail, the mailroom employee delivers all checks to the cashier

b. prenumbered remittance advices

c. the treasurer signs all disbursement checks

d. a bank lockbox system