In response to the 2008–2009 financial crisis, the U.S. Congress authorized a $700 billion bailout package for the banks called the ________.

The 1st amendment allows for the creation of _____________ by granting people the right to ___________ the government for a redress of grievances.

Fill in the blank(s) with the appropriate word(s).

Which of the following CANNOT explain any change over time in most of the before-and-after designs?

A. history B. maturation C. selection D. instrumentation