Apolitical rally erupts in violence, seriously injuring a number of attendees. an editorial columnist writes that city officials should have realized the violence would occur. "all the signs were there," the columnist notes. this belief most clearly illustrates hindsight bias, otherwise known as

the I-knew-it-all-along phenomenon.                                  

Explanation:

Hindsight bias: Also known as 'the I-knew-it-all-along phenomenon'.

The hindsight bias phenomenon involves the propensity of a person to assume or estimate that he or she already knew the consequence of a particular event after the consequence has formerly been determined.

Example: A person claims that he knew that his friends will not come but later on his friends came and he claims that he knew that the opposite is going to happen.                      

world bank is the correct answer.