Which of these comments best illustrates the technique of setting an objective during a discussion? a. why do you disagree with rick's opinion? b. is the author more reliable because she's a doctor? c. did you see that information on page 26? d. should we search the internet to find out more about this era ?

D. Should we search the Internet to find out more about this era ?

Explanation:

The phrase "Should we look on the Internet to find out more about this era?" provides information that a group of individuals read something about an era, but some doubts remained about that era. So they wonder if they should look for information on the internet in order to know more about this era. For this reason, the comment that establishes an objective is what is described in letter D.

this doesnt make any sense imao

we need to see the examples!