The common factor that seems to mark the conversion of a crowd into a mob is a. a preestablished mob mentality. b. collective emotional arousal. c. a lurking beast in all of us. d. a tendency of all people to go along with the crowd.

the answer is b on pf

B. Collective emotional arousal

Explanation:

Social psychology explains that a crowd is affected by the impression of universality of behavior, which can lead to loss of individual responsibility and increase the probability of taking emotional decisions rather than rational. Therefore when individual are influenced by a mob mentality they may make different decisions than they would individually.  

- "sack of constantinople, (april 1204). the diversion of the fourth crusade from the holy land to attack, capture, and pillage the byzantine city of constantinople divided and dissipated the efforts of the christians to maintain the war against the muslims. the fourth crusade was corrupted from its purpose early on."

- "the crusades were a series of religious wars undertaken by the latin church. the first crusade arose after a call to arms in 1095 sermons by pope urban ii. the first crusade unleashed a wave of impassioned, pious catholic fury, which was of constantinople, the capital of the christian-controlled byzantine empire."

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okay? wahts the question