Final answer:
The principle referring to elected officials who act according to people's interest is representative democracy, which is the form of government utilized in the United States.
Step-by-step explanation:
The principle that refers to the election of officials who act in accordance with the people's interest is representative democracy.
In a representative democracy, citizens elect officials to make decisions and pass laws on their behalf rather than participating directly in the decision-making and legislative process.
This form of government is prevalent in the United States, where elected officials at various levels, from Congress to local school boards, represent the interests of their constituents.
These representatives are expected to promote policies that benefit the majority while also protecting the rights of the minority.
correct option d) Representatives democracy