
Step 1: Translate the information.
  
- \(65%\) of users were advised to quit.  
- Only \(30%\) (3 out of 10) attempted quitting.  
  
Step 2: Link the groups.
  
All attempts (30%) must come from the "advised" group (65%), because only those advised can be expected to attempt.  
So, among those advised (65%), only 30% attempted.  
  
Step 3: Majority check.
  
Since 65% were advised but only 30% attempted, the remainder (35%) did not attempt.  
Thus, within the advised group, more than half did not attempt quitting.  
  
Step 4: Eliminate wrong options.
  
(A) Claims majority of advised did attempt — false.  
(C) and (D) talk about successfully quitting, but success data is not given — cannot infer.  
Only (B) follows with certainty.  
  
Final Answer:
  
\[
\boxed{\text{(B)}}
\]
In the Wheatstone bridge shown below, the sensitivity of the bridge in terms of change in balancing voltage \( E \) for unit change in the resistance \( R \), in V/Ω, is __________ (round off to two decimal places).

The relationship between two variables \( x \) and \( y \) is given by \( x + py + q = 0 \) and is shown in the figure. Find the values of \( p \) and \( q \). Note: The figure shown is representative.
