Efficacy is defined as the ability to produce a desired or intended result. Celia's focus is to determine the ability of certain programs to produce a desired result, and that is to develop a vocabulary that will set them up for success in kindergarten.
Answer:I got this question on my test and knew the question so to the ppl that need the answer it is.. Yes, because a new material of a different color formed on a part of the metal strip.
