Answer:
Spreadsheet database
Step-by-step explanation:
Kerry needs to keep client information such as names and addresses. She should use a spreadsheet database.
A spreadsheet can help her manage and arrange all the client information in a very effective manner. She can create a database and whenever she wants details for some clients, she can just type the keyword in search box and find it in seconds. Unlike manual data keeping which would take several minutes to look up details for a single client.