A Key Benefit of the Advent of Brain Imaging Techniques

A key benefit of the advent of brain imaging techniques is that they allow us to

A) Investigate causational relationships between cognitive processes and brain activity
B) Investigate aspects of cognition that were previously impossible to observe directly, such as brain areas that are active for seen versus imagined stimuli
C) Record direct signals of neural activity for differing kinds of stimuli
D) All of the above