Answer
In Parliamentary democracies form of government the citizens have highest involvement opportunity.
Step-by-step explanation
This is where members of the public or voters exercise their rights to chose their leaders and they elect the people who will represent them in a lawmaking body which then chooses the prime minister as the head of the government.
The coalition or a political party that emerges winner or with the greatest representation in the parliament is the one which forms the government and its leader becomes the head of state or the prime minister.