Answer:
D. Spreadsheet mechanics.
Step-by-step explanation:
Learning how to use spreadsheets is not exactly a practice required to develop in the world of business, although it is a convenient tool to use when it comes to organization.
Doing business involves harnessing communication skills, being familiarized with accounting principles, and knowing staff management. In contrast, using spreadsheet mechanics is a practice which a person who works for a business manager would use.