Which of the following methods can be used by the Legislature to check the Executive in a presidential system?

In a presidential system, the Legislature and the Executive are separate and independent branches of government, which means that they have checks and balances over each other to prevent abuse of power. One of the methods the Legislature can use to check the Executive is impeachment. Impeachment is a formal process of charging and removing a high-ranking public official, such as the President or Vice President, from office due to serious misconduct or violation of the law. The Legislature can also use oversight functions, such as investigative hearings, to hold the Executive accountable for its actions. Additionally, the Legislature has the power to pass laws, including the power of the purse, which can limit the Executive's authority and influence its decisions. Therefore, the correct option is (d) Impeachment.