The correct answer is A. Constitutional civil liberties cannot be violated, even to address a major public concern.
Step-by-step explanation
The author exposes the problem of carrying unlimited firearms since it is a security risk for the entire population. Also, many people consider that their possession should be prohibited. However, the author refers to the fact that the Constitution grants certain freedoms to the population regarding the carrying of weapons for the defense of the home that would go against the total prohibition of such weapons. Therefore, the answer is A Constitutional civil liberties cannot be violated, even to address a major public concern.