Before sonya left for college, she told her friend lacy that she thought sororities were filled with snobs and that she would never consider joining one. during sonya's first week on campus, a sorority member invited her to a social function and encouraged her to pledge. after sonya attended the party, she told lacy, "sororities do a lot of good things for the community. they're really service organizations." sonya's change in attitude illustrates
a) cognitive dissonance theory
b) role playing theory
c) attribution theory
d) attitude theory

Sonya's change in attitude illustrates cognitive dissonance theory .

This theory describes the inconsistency of a person’s behavior, beliefs or attitudes. The internal struggles caused by these conflicted feelings lead to change in any of these traits which eventually lead to ease of discomfort and restoration of balance.  

Some of the factors that affect cognitive dissonance include changes that lead to making new relationships, acquiring new information and reducing the importance of long-held beliefs, behavior and attitudes. Sonya’s changed her attitude and behaviors due to connecting on a personal level with the sorority girls.

answer; /// i believe the correct answer is general act charters;

the earth’s crust is broken into separate pieces called tectonic plates (fig. 7.14). recall that the crust is the solid, rocky, outer shell of the planet. it is composed of two distinctly different types of material: the less-dense continental crust and the more-dense oceanic crust. both types of crust rest atop solid, upper mantle material. the upper mantle, in turn, floats on a denser layer of lower mantle that is much like thick molten tar.

each tectonic plate is free-floating and can move independently. earthquakes and volcanoes are the direct result of the movement of tectonic plates at fault lines. the term fault is used to describe the boundary between tectonic plates. most of the earthquakes and volcanoes around the pacific ocean basin—a pattern known as the “ring of fire”—are due to the movement of tectonic plates in this region. other observable results of short-term plate movement include the gradual widening of the great rift lakes in eastern africa and the rising of the himalayan mountain range. the motion of plates can be described in four general patterns:

collision: when two continental plates are shoved together

subduction: when one plate plunges beneath another (fig. 7.15)

spreading: when two plates are pushed apart (fig. 7.15)

transform faulting: when two plates slide past each other (fig. 7.15)