The correct answer is A) a higher chance of reelection.
A potential benefit for a government leader using cost-benefit analysis is a higher chance of reelection.
A correct and useful method of decision-making is CBA or better known as cost-benefit analysis. This method is very simple. You compare your advantages to the disadvantages of the decision. You collect the information at hand and then proceed to make the best decision. In 1840, Julies Dupuit who was an Engineer from France started to use this method successfully. That is why is correct to say that a potential benefit for a government leader using cost-benefit analysis is a higher chance of reelection.
