I think it is more often, if I'm reading the question right
The sound argument is this one:
<span>All teachers wear vests. Mr. Gonzales does not wear a vest. Therefore, Mr. Gonzales is not a teacher.
If ALL teachers wear vests, then it means that everyone who is a teacher is wearing a vest: you can recognise a teacher by their vest. So someone who is not wearing a vest, such as Mr. Gonzales, is not a teacher.
</span>
Here are the answers of the given questions above:
18. The sentence that contains an error in colon usage is option C. Brandon wanted to go fishing: but I wanted to go sailing. In this sentence, it should be a comma and not a colon.
19. An example of an indirect quotation would be option D. The lawyer said that your case will not take long. Indirect quotations no longer need quotation marks.
Answer
A. Informal
Explanation
Informal outlines can take the form of brief lists of ideas in the order in which you want to discuss them.
