Answer:
c. of the reaffirming content of the messages.
Self-help audio tapes typically contain messages that aim to inspire and motivate individuals to make positive changes in their lives. The content of the messages often reinforces positive thinking, self-esteem, and personal growth. Research suggests that exposure to positive messages can have a beneficial effect on individuals by enhancing their mood, self-perception, and confidence. Therefore, the reaffirming content of the messages is likely the reason why self-help audio tapes bring about changes in people. The other options listed (a, b, d, and e) do not have sufficient evidence to support their effectiveness in bringing about changes in people through self-help audio tapes.
Step-by-step explanation: