In legal terms, "inter alios" relates to transactions...

The term "inter alios" is a Latin phrase meaning "among other persons." In legal contexts, it is often used to refer to situations where certain rights, obligations, or effects of a legal action apply to additional parties beyond those directly involved in a case or transaction. This term indicates that the focus is not solely on a specific individual or group but encompasses a broader range of individuals.

For example, in the context of a contract, certain effects or implications might be relevant to parties who are not signatories but are nonetheless affected by the contractual agreement. In this way, the term emphasizes the inclusion of multiple parties in legal discussions or outcomes.

The other options do not accurately capture the meaning of "inter alios," as they focus on specific contexts (public affairs, private matters, contractual obligations) rather than the broader notion of inclusion of other individuals or entities in legal discussions.