There are three bird species on an island bird A has a heavy bill for eating seeds bird B has Pointed beak to eat Insects. bird C has a sharp bill for eating insects and deeds if all suddenly disappeared which bird or Birds would be least affected

where is the diagram?

if you insert the diagram ill be able to you

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.