Answer:
The consideration which will be dictated for Nathan's self efficiency is:
C. Verbal persuasion
Step-by-step explanation:
Here, in the question it is mentioned that Nathan has been defending his first place ranking in his annual debate competition.
Now, just some minutes before his turn in the annual debate competition he gets nervous and he cannot remember his arguments related to the debate topic.
His teacher comes and talk to him, teaches him, reminds him of his theories and topics. Also motivates him and make him remind his special skills and shore up his demoralised confidence.
By listening all these things he gets motivated and delivers his best and defends his title at his very best.
So, the consideration which will be dictated for Nathan's self efficiency is:
C. Verbal persuasion