The correct options are
A Upholds the principle of separation of powers.
C The legislature and the executive share a strained relationship.
D Might lead to government degenerating into dictatorships.
When it comes to the Presidential system, the principle of separation of powers are upheld. The President is directly elected, it’s also theoretically more ‘democratic’. With the separation of powers, the decision-making by the President is also much quicker. Since the powers are separated, this also means that the legislature and the executive share a much more strained relationship. In countries like Zimbabwe, the lack of checks and balances can also allow governments to degenerate into dictatorships.