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.

the illustration   that would give a reader a clear understanding of the text is a picture of men constructing the frame of a building.the frame is made of iron bars. the text describes the job of blacksmiths'. these were very organised and they had different names: "the driver" and "the heater". the text describes the way in which these men worked ; they worked iron pieces as if they were playing a sport. in fact, the text wants to show the men's skills. the text also puts some emphasis on the use of '' rivets'' in construction. this kind of nails were not always used in the construction of manhattan.

some examples:

"and with an underhand toss he hurled the smoking rivet straight at the catcher, who caught it in mid-air in his catching can." men's skills

"when the driver was ready for a new " the emphasis on the rivet ( special nail used in construction).

" it against a beam to remove any cinders, and jammed it into the waiting hole. " the emphasis on the rivet.

throughout history, economists have always thought  ..