A bus can seat at most 52 passengers. If 19 passengers are already seated, what is the maximum number of additional passengers who can sit?

Correct answer: 33

Let \(x\) be the number of additional passengers. The capacity condition is \(x+19\leq52\), so \(x\leq33\). Therefore, at most 33 more passengers can sit. Option 34 is incorrect because it would make the total 53 passengers, exceeding the capacity of the bus. In an exam, remember that “at most” translates to \(\leq\).