How did henslow influence charles darwin?

Henslow organised his herbarium to emphasize variation within species and determine the limits between species. He was a religious man who believed the orthodoxy of the day that species were stable and did not evolve. ... When Darwin took his famous trip on the HMS Beagle in 1831, his place was arranged by Henslow

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.