Read the introduction to an argumentative essay.
(1) graffiti artists are gaining worldwide recognition for their
art work. (2) graffiti art deserves to be treated like "real" art
because, like other types of art, it has its own unique style,
contains artistic elements like color and composition, and
expresses the emotions and viewpoints of the artists.
how can the writer revise the introduction to be more effective?

By adding closing sentence

Explanation:

The introduction will be more effective if the writer would add a closing sentence. The main idea of closing sentences is to establish and restates the most important thing about the argumentative essay, to show what are the key and the main idea of that essay.

This introduction needs strength and stable information because these pieces of information are incomplete and they are left hanging. Because it is the argumentative essay it would be good to be clear about what the author is arguing and what is he trying to describe.  

answer: b. the moon is much smaller than the earth.

explanation:

it starts off by comparing the earth and venus. it also only says one sentance about the moon which make it the odd one out. in conclusion the answer is b.