Answer:
external stakeholder
Step-by-step explanation:
External Stakeholders are the individuals or the groups of the individuals who are outside a particular project or business, but they can affect or they can be affected by the project or business.
In the case case study, Widgets Inc. acts as a vendor for the appliance manufacturing company by supplying machine parts. Widgets Inc. is outside the appliance manufacturing company but is affected by the company as its revenue depends on the appliance manufacturing company. Thus, Widgets Inc. is an external stakeholder for appliance manufacturing company.