You are creating a new purchase item.

Tax applicability determines whether tax is calculated on a transaction line and is one of several attributes configured during procurement setup to streamline requisition, purchase order, and supplier invoice entry. The Official Workday Pro Procure-to-Pay Guide identifies the purchase item record as the location where a default Tax Applicability value is assigned, so that whenever the item is added to a transaction, the correct default tax treatment automatically populates, reducing manual entry and errors. Option B is incorrect because suppliers do not carry a tax applicability default for items; tax treatment depends on what is being purchased, not who it is purchased from. Option C is incorrect because Edit Company Procurement Options governs company-wide procurement behaviors such as defaults for shipping, sourcing, and requisition settings, not item-specific tax defaults. Option D is incorrect because Edit Tenant Setup - Financials configures tenant-level financial settings such as currencies, fiscal calendars, and general ledger options, and does not provide a mechanism for setting tax applicability on individual purchase items.