review the media:

what is the primary effect of the subheadings ("when? " and "how? ") used in this media piece?

(a) the audience is able to get the information quickly and easily, since it only has to read the subheadings to understand what the poster is about.

(b) the subheadings the audience members realize that they do not know when or how to wash their hands.

(c) the subheadings tell the audience what type of information is in each section.

(d) the subheadings are written in an attractive font, making the poster entertaining to look at.