What is Abiotic and Biotic ?

abiotic factors refer to non-living physical and chemical elements in the ecosystem like water, air and sunlight.

biotic factors are living ot once-living organisms in the ecosystem like humans and animals

basically biotic is alive and abiotic is not alive

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.