Answer:
Lobbying.
Step-by-step explanation:
Lobbyists are activists whose endeavor and intent is to persuade government officials to enact laws and policies (legislation) that would benefit their group.
The main aim and objectives of this lobbyists is to spend huge amounts of money each year, in order to gain access to legislative and executive arms of government, in a bid to influence their thinking.
Examples are Blue Cross Blue Shield, American Civil Liberties Union (ACLU) etc.
However, the interest groups consists of individuals who are only concerned about influencing public policy of the government on the basis of a particular common aim and interest. Examples of interest groups are labor groups, environmental interest groups, animal rights groups, etc.
The interest group strategy that includes face-to-face meetings with legislators and providing policy information to policymakers is known as lobbying.