What was the narrator's problem in the yellow wall?

In figure 4 of the telephone components what do the labels lettered a to e

What element does susan b. anthony include in this passage to strengthen her argument?

Why is it important to include a descriptive subject heading? it in sorting the topics. it the recipient see its importance. e-mail programs won’t allow e-mail to be sent without it. it keeps junk e-mail separate from important e-mail.