In the sentence, The authors stopped short of advocating an ...

[Garrulous]

In the sentence, The authors stopped short of advocating an advertising ban or eliminating the advertising tax
  deduction, the expression stopped short means
 
  a. provided limited information about.
  b. gave limited support to.
  c. did not go so far as to say.
  d. did not complete their argument.

Question 2

An author's argument is also known as all of the following except
 
  a. an author's claim
  b. an author's opinion
  c. an author's style
  d. an author's thesis

[smrtceo]

Answer to Question 1

c. did not go so far as to say.

Answer to Question 2

c. an author's style

[Garrulous]

Excellent

[pratush dev]

Great answer, keep it coming