What object in Salesforce is primarily used to store information about supporters?

The choice of Contact as the object primarily used to store information about supporters is correct because in Salesforce, the Contact object is specifically designed to manage details about individuals or organizations with whom a nonprofit interacts. Supporters can include donors, volunteers, and members, and their personal information, relationships, and engagement activities are best captured through the Contact object.

Contacts are integral to managing relationships in the context of a nonprofit's mission, allowing organizations to track communication, contributions, and interactions with these supporters effectively. It is essential for nonprofits to maintain accurate records of their supporters to facilitate engagement and outreach efforts.

Meanwhile, the Account object is generally used to represent organizations rather than individuals, which is why it doesn't serve the primary function of storing supporter information. The Opportunity object is used to track fundraising opportunities, such as donations or grants, rather than the supporters themselves. The Grant object specifically pertains to financial assistance awarded, not personal supporter information. Thus, Contact stands out as the most relevant object for managing supporter details in the Salesforce ecosystem.