Writers often use commas, parentheses, or dashes to signal the ...

[maychende]

Writers often use commas, parentheses, or dashes to signal the type of context clue known as
 
  a. contrast.
 
  b. inference.
  c. definition.
 
  d. synonym.

Question 2

Which of the following is a specific example of a problematic Facebook research experiment mentioned in this article?
 
  a. controlling newsfeed content in an attempt to change users' moods
  b. keeping track of how many friends people add to their Facebook accounts in the course of one year
  c. pharmaceutical companies changing their products to see what consequences result
  d. the Stanford prison experiment

[ebe]

Answer to Question 1

c

Answer to Question 2

a. controlling newsfeed content in an attempt to change users' moods

[maychende]

Excellent

[kalskdjl1212]

YES! Correct, THANKS for helping me on my review