"Lifetime appointments and the new, highly ideological stakes provided senators ample incentives to use holds and silent filibusters to prevent a majority of their colleagues from acting on judicial nominations, both to block those with different ideologies and to keep slots vacant until the presidency moves into their party’s hands. Along the way, judicial confirmations have become increasingly politicized, and delays in confirming appellate judges have led to increased vacancy rates that have produced longer case-processing times and growing caseloads per judge on federal dockets." -Mann, Thomas E. and Norman J. Ornstein, It’s Even Worse than it Looks, 2012 Which of the following statements best summarizes the authors’ argument?

a.) The Senate is more likely to place holds on life-tenured judicial appointments because of the lasting influence of those appointments
b.) Senate confirmation serves as a check on appointment powers