How does the author organize the article? 1. By describing problems of logos and then offering ideas on improving them. 2. By presenting research on logos and then showing how the human brain works. 3. By listing familiar logos and showing their role in advertising campaigns. 4. By comparing common logos and then identifying the most effective ones.

How does the author organize the article? 1.  By describing problems of logos and then offering ideas on improving them. 2.  By presenting research on logos and then showing how the human brain works. 3.  By listing familiar logos and showing their role in advertising campaigns. 4.  By comparing common logos and then identifying the most effective ones.