It creates progress and civilization
The correct answer is "Slang displays a tone that is too casual"
Slang speak is highly informal, sometimes even offensive. One should never use slang in a business setting because business deals should be kept highly informal and professional. Slang shouldn't be used under any circumstance as it may insult the people with whom we are talking by making it seem that we don't appreciate them or their business endeavors.
The answer might be either A or C, but I'd go with C.
Hope this answered your question ;-;
Close reading helps the reader understand the text more and enhances the reader's reading abilities.
An example of close reading is annotating the text.
Both of the fathers are violent and negative.