What type of sponsor must provide evidence of a relationship to the intending immigrant?

The correct option focuses on the responsibilities of a substitute sponsor in the immigration process. A substitute sponsor is someone who may step in to financially support an intending immigrant when the original sponsor is unable to fulfill their obligations, often due to issues such as death, divorce, or inability to meet the sponsorship requirements.

The key requirement for a substitute sponsor is that they must demonstrate a documented relationship to the intending immigrant, which confirms their eligibility to take on the sponsorship role. This relationship can be vital in establishing the legitimacy of the support and ensuring that the immigrant has a reliable backing in the United States.

In this context, the other options do not carry the same obligation for relationship documentation. An affidavit sponsor might provide a declaration of support but does not necessarily have to prove a specific relationship to the immigrant. A financial sponsor primarily focuses on meeting the financial criteria without the need to demonstrate a relational connection. The term "immi-relational sponsor" is not used in the immigration context and does not accurately describe a recognized role or requirement. Thus, the necessity of providing evidence of a relationship is a distinct characteristic of the role of a substitute sponsor.