Which of the following is one of the commonly held ideals of american political culture?
a. belief in a unitary government and centralized decision-making
b. belief in a limited government that protects individual liberties
c. belief in the right of all americans to own handguns
d. all of the above

I would say that the best is this one:

b. belief in a limited government that protects individual liberties
About the other options:
a- this is not really true, US is a federation so the government is not very centralized
c- no, this is controversial. Some people believe in the right to won handguns, but some don't.

The correct option is this one:
b. belief in a limited government that protects individual liberties - this is however true. The limited government allows for more economical freedom and the freedom of the states to decide over their internal affairs, which is something dear to Americans

Habit is no concious