Which of the following is true of Austrian psychiatrist Viktor Frankl?
a. Spirituality, in his view, has a religious underpinning.
b. He argued that examining the finiteness of our existence and the certainty of death adds meaning to life.
c. He said that the two most distinct human qualities are religiousness and philanthropy.
d. He argued that freedom refers to a human being's uniqueness of spirit, philosophy, and mind.