The correct answer is option 3: Sharing of power by two or more political parties. A coalition form of government is when two or more political parties come together to form a government. In this type of government, power is shared between the different parties involved. This means that decisions and policies are made collectively, taking into account the interests and perspectives of each party. It is a way to ensure that multiple voices and viewpoints are represented in the government. This form of government often occurs in situations where no single party has enough seats in the legislative body to form a majority government on its own.