List the best data entry data method and your reason for choosing it for each of the following five situations:

a. A retailing giant often puts up products nearing expiry on a clearance sale but has insufficient staff to address customer queries on new prices during the sale period.

b. A university is organizing a workshop on the latest analytical skills required for systems developers.

The workshop’s organizers need a system to help address the students’ queries.

c. A food processing firm needs to track the supply of raw material through various modes of transport in real time.

d. A retailer wants to speed up the payment process by removing the need for customers to swipe their card, enter card details, and then complete their payments.

e. To reduce the time spent on evaluating test answer sheets, a university wants to develop a new marking scheme that makes the tests electronic.