After the 9/11 attacks:

a.
people held off on business investment until it became clear that the attacks would not become regular occurrences.

b.
the economy's long-run potential growth rate increased.

c.
the need for information about the future went out the window.

d.
people rushed to invest in new york city.

A

Explanation:

Hello! The reason for this is because obviously people we're investing thousands potentially millions and after any disaster, people are always worried about losing their money due to the economy being unstable. Hence, why people were worried about investing in companies and businesses.

b is correct

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