Imagine, for a moment, two different images: Imagine (1) Dr. Hubbard giving a lecture last Wednesday, and imagine (2) the use of "effective instructional techniques". Which of the following statements BEST distinguishes between these two images?
a. image 1 is a concept, image 2 is a concrete event
b. image 1 is a concrete event, image 2 is a concept
c. image 1 is a concept, image 2 is a theory
d. image 1 is a building block of theory, image 2 is not