Answer:
C. Newts with the mutation are better able to survive and reproduce than newts without the mutation.
Step-by-step explanation:
Faster reflexes is an advantageous traits because the organisms can react better to any dangers, which helps them live and survive. Since the trait was passed down from many different generations, that means that it happened slowly, meaning the genes had to spread through reproduction; only the ones that survive reproduce. So there were more survivors with the mutation slowly increasing the population that had the mutation.