Which is a compound-complex sentence?
while they were walking on campus, dwayne admired the buildings, and michelle imagined attending classes in this beautiful place.
daily exercise is beneficial to your health, therefore you must take several precautions to avoid injuries.
our experienced tour guide, who grew up in the area, directed us toward some amazing local scenes.
the electronic merchandise was defective, as it had been severely damaged during shipment.

Read the excerpt from the declaration of independence. governments are instituted among men, deriving their just powers from the consent of the governed, that whenever any form of government becomes destructive of these ends, it is the right of the people to alter or to abolish it, and to institute new government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their safety and happiness. what is the author’s purpose in this excerpt? to inform readers about different systems of government to inform readers about recent governmental reforms to persuade readers of the need for governmental change to persuade readers to petition their local governments