A civil war in Guatemala begins. Guatemala becomes a part of Mexico. The US trains opposition forces for a coup against the Guatemalan government. Guatemala becomes a part of a federation of Central American countries. The US trains opposition forces for a coup against the Guatemalan. Guatemala becomes a part of a federation of Central American countries. The first conquistadores set foot in Guatemala
Guatemala becomes a colony of Spain. Rigoberta Menchú receives the Nobel Peace Prize.
C is the choice I would make because I believe the writer is planning to answer this question: "and how come we think dogs are so smart". The writer never tells us what dogs can't do (a) or mention others being dumb (b) and doesn't make fun of humans (d)