As the concert ends, Clark says to his aunt, "From the trembling of her face, I could well believe that before the last numbers she had been carried out where the myriad graves are...where...hope had lain down with hop and dream with dream and, renouncing, slept." What is the most significant thematic inference you can draw from this passage? (in "A Wagner Matinee")
A. One thing a person wished for can end in disappointment.
B. A difficult life has the power to a person's spirit to sleep.
C. Our faces often reflect how we are feeling.
D. A person can realize hopeless regret over having made the wrong choice in life.

Dr. laguardia is a cognitive neuroscientist who is interested in the effect of brain concussions on the ability to recognize faces. he conducts a quasi-experimental study in which he examines football players before and after the regular season using the benton facial recognition test (a published, widely used measure of one's ability to recognize faces) to compare those who received concussions to those who did not. he finds that players who had concussions during the regular season performed worse on the benton facial recognition test than did players who did not experience which of the following is true regarding external validity in dr. laguardia's study? a. because dr. laguardia selected participants who actually experienced concussions, the study b. because dr. laguardia's study is a quasi-experiment, it is impossible to obtain c. because dr. laguardia's dependent variable was assessed in the laboratory, the study d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.