To test the influence of aging on context-dependent memory effects, researchers could show faces to participants under which condition?

The appropriate choice for testing the influence of aging on context-dependent memory effects is to show faces to all participants in one room and then move half to a different room. This design allows researchers to explore how changes in context affect memory recall among different age groups.

Context-dependent memory suggests that people are more likely to remember information better when they are in the same environment where they initially learned or encoded it. By providing a unified setting initially (all participants in one room), and then altering the context by moving only half of the participants to a different room, researchers can effectively measure the impact of context change on memory performance. This approach allows for a direct comparison of memory recall between those who remained in the same environment versus those who experienced a change.

In contrast, other options introduce elements that either do not isolate the variable of interest (age) appropriately or fail to create a clear comparison related to context changes. Option A might not provide the necessary control since it only focuses on older adults, limiting comparisons with younger participants. Options C and D integrate background information in ways that do not directly measure the effects of changing context on memory recall, which is essential for assessing context-dependent memory specifically related to aging.