The 'Call to action" statement is where you engage your reader it should inspire, educate, and it should be able to win over the reader to your "Cause".
The noun that describes argument is talk.<span />
1: cracy
2: rule
3: ir
4: not or no
hope this helps :)
Spelling
Punctuation
Grammar
Inconsistency
Improving Sentence Construction
etc.
It depends on what piece of work you are looking at - for example: sentence structure is more important in a writing assessment as oppose to a reading assessment.
