Which of the Following Is More Likely to Be a Problem

Which of the following is more likely to be a problem in a presidential system than in a parliamentary system?

A) weakening of the judiciary over time as a result of conflicts between presidential and legislative authority
B) policy disagreement between a legislature and the executive that restricts lawmaking for a long period, even if the executive has become unpopular with the electorate
C) policy disagreement between a legislature and the executive that results from a very small party in the legislature denying a law a majority vote
D) growth of power in political parties as presidential candidates become more beholden to party loyalists