This system would be called the "totalitarian system".
Statements A. C. and D. are all actions that individuals/groups can take that affect government policies.
The ability to petition and assemble (mentioned in statements A and D) are two of the five freedoms guaranteed in the first amendment of the US Constitution. These actions, as long as they are peaceful, can help to bring awareness to issues that citizens find relevant.
Lobbying is another action citizens can take. This can include writing letters, asking for interviews, and developing deals. All of these actions can result in change of government policies.
The three things that Democrats promote regarding the 7th president, who was Andrew Jackson, are a reject to a wealthy aristocracy, a common man preference, and the wellness of all the people over individuality. These are the core ideas taken from Jackson by the Democrats.