An earthquake sends out mechanical waves in all directions from its source. As
these mechanical waves travel through different parts of Earth, through which
part of Earth do they travel most quickly?

PLEASE HELP

the endomembrane system i think

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.