How does the author advance his purpose in the article?
Select to read "NASA Brain Training Tech Makes Smart Glasses"
A. The author uses logical reasoning to inform of the benefits of
using neurofeedback to increase focus.
B. The author uses the credibility of NASA to support the use of
widespread neurofeedback with professional athletes.
C. The author uses emotional appeals to plead with consumers to try
out the technology.
D. The author uses expert testimonials to argue the effectiveness of
Cyberlearning's products.