PLEASE HELP ASAP FOR FINALS 100 POINTS Which human trait is an example of polygenic inheritance?

a attached ear lobes
b skin pigmentation**
c Huntington's disease
d the ABO blood groups

Which claim is an evolutionary advantage of asexual reproduction over sexual reproduction?
a Asexual reproduction requires many more steps than sexual reproduction.
b Asexual reproduction can produce a variety of individuals.
c Asexual reproduction requires only meiosis.**
d Asexual reproduction can increase the population in a very short amount of time.