The correct answer is option 2, Presidential Form of Government. In a Presidential Form of Government, stability of the government is assured because the President is elected separately from the legislative body and holds considerable executive powers. The President is not dependent on the support of the legislative body to maintain their position, which reduces the chances of frequent changes in the leadership. This allows for a more stable government as the President can make decisions and enact policies without the constant need for approval from the legislative body. In contrast, in a Parliamentary Form of Government (option 1), the stability of the government relies on the support of the legislature, which can lead to more frequent changes in leadership. The other options, Plural Executive System (option 3) and Direct Democracy (option 4), do not necessarily provide the same level of assurance for government stability.