Why is the designation of conspiracy as a crime sometimes criticized as a threat to first amendment freedom?

The designation of conspiracy as a crime is seen as a violation of the First Amendment guarantee of free speech.

The most common criticism is the lack of specificity in what constitutes an agreement and intent. The ambiguity in the definition raises concerns about the possibility of governments and states pursuing conspiracy-related charges against those speaking out against them.

the answer is states.

b is the answer i am assuming