Answer:
The value of the variable counter after executing the given line of code is: 4
Explanation:
The Code snippet checks different values of the variable percent and isValid.
It checks these values at three stages
if ((percent > 0.50) && (isValid == true)) {
This first check is true so it enters the inner loop
if (isValid == true)
This condition is also true so at this point counter is assigned counter++
The third condition else if (percent >= 0.50) Also returns true so counter is assigned a new value counter += 3; (Which evaluates to 4). This is the final value of counter since the else condition is false.