United States citizens have many ways to participate in national life. The most common form of participation is A)joining local civic clubs.
B)voting in national elections.
C)joining a national political party.
D)running for election to the school board.

answer; i believe the correct answer is (a) the correlation between the cause variable and outcome variable is zero;

i looked up you question and i found this on quizlet i hope this is one of your answer choices.

modern american cars are not available due to trade restrictions

good question. i'll be looking into that. (this is a joke sir)