Mr Wagner Stands in Front of the Class Explaining the Process

Multiple Choice

Mr. Wagner stands in front of the class explaining the process of photosynthesis. Ellen is sitting in the front row, but her mind is on the fight she had with her best friend just before class. Based on this information, how far in Ellen's information processing system did Mr. Wagner's lecture get?

A) It reached the sensory register.
B) It reached working memory.
C) It reached long-term memory.
D) It never got into the system at all.