Which of the following relates to the concept of "typicality" in a class-action lawsuit?

The concept of "typicality" in a class-action lawsuit is specifically concerned with the notion that the claims of the named parties in the lawsuit must be typical of, or representative of, the claims of the entire class. This requirement ensures that the interests of the class members are adequately represented by the named plaintiffs.

In practice, this means that the named plaintiffs must have claims that share common questions of law or fact with the other class members. This is crucial because if the claims of the named parties are not typical of those of the class, it could lead to situations where the interests of the larger group may not be adequately protected or represented in court.

This differs from the other options, which either misinterpret the requirements of typicality or focus on unrelated aspects of class actions, such as the need for identical claims among all class members or differing events that might lead to claims. In contrast, typicality recognizes the commonalities in the claims rather than requiring them to be identical or the result of different circumstances.