Species of modern stick and leaf insects belonging to the order Phasmatodea are similar to 47-million-year-old fossils of stick and leaf insects. Researchers think that the similar forms of these insects indicate that ancient insects may have engaged in one of the same behaviors as modern insects to escape predators. This behavior, called catalepsy, involves remaining extremely still to deceive predators. This scientific explanation regarding stick and leaf insects indicates that they A
developed a successful survival strategy over the course of 47 million years that decreased their reproductive success.

B
have lived in a stable environment that did not undergo significant change over 47 million years.

C
developed a successful survival strategy 47 million years ago, increasing their reproductive success.

D
have passed mutated genes to each generation, impairing their ability to evolve for 47 million years.

Archeologists have discovered three sites showing conclusive evidence for the mastery of fire in tanzania, from a period slightly after the time that homo habilis was present in africa. these sites clearly were founded by homo erectus, the descendent species of homo habilis that migrated north, out of africa and into asia. homo erectus was known to have mastered fire, from ample evidence at sites in asia. there is no reason to attribute mastery of fire to homo ergaster, the descendent species of homo habilis that remained in africa.which of the following is an assumption on which the argument depends? (a) before their migration, homo erectus occupied african territory as far south as tanzania.(b) the strain of migration provided the selective pressure motivating homo erectus‘ mastery of fire.(c) homo ergaster would not have derived as much benefit from the mastery of fire as did homo erectus.(d) homo ergaster inherited all cultural knowledge from homo habilis, a species that did not have mastery of fire.(e) homo ergaster did not occupy regions as far south as tanzania until well after the time of these three sites.