Passage A: The pastor of my church said that existentialism denied absolute truth and undermined the idea of genuine moral standards. As far as I can tell, existentialism is a movement in philosophy that consists in some rather complex philosophical theories. So, I'll just take my pastor's word for it that existentialism is bad.

Above Passage commit a fallacy; specifically, it commit a false cause fallacy.

It does commit a fallacy, specifically, it does not commit a false cause fallacy.

Explanation:

The argument presented above presents a fallacy, specifically, a fallacy known as the Argumentum ad verecundiam, or appeal to authority. This kind of fallacy occurs when a relevant personality is used as a justification to support a false argument. In the case of the argument presented in the text above, the speaker uses the authority that the pastor presents in his life, to justify the argument that existentialism is bad.

answer; ///attempts to change more than once behavior at the same time;