Which example reflects autobiographically significant semantic memories according to Westmacott and Moscovitch?

The correct choice showcases autobiographically significant semantic memories, which are memories that combine personal significance with factual information. In this context, option B depicts a scenario where an individual recalls the name of an actor they saw at the airport years ago. This memory is autobiographically significant because it involves a personal experience—seeing an actor in a specific location that likely holds some relevance to the individual's life, thus intertwining a factual memory (the actor's name) with the personal context of having witnessed the event.

The other options do not illustrate the same level of personal relevance or significance. For instance, remembering a lecture from a distant classroom focuses more on the factual content rather than the personal link. Forgetting the name of an acquaintance reflects a lack of retention of a socially relevant memory, rather than the recall of an important or significant fact. Learning about famous actors from a textbook emphasizes a purely academic and detached form of memory rather than a personally experienced event. Therefore, the selection of recalling the actor's name at the airport effectively aligns with the definition of autobiographically significant semantic memory.