Answer:
quite simple the antibiotics will be passed off into the yogurt and it may have a healthy affect on humans or harmful, however if healthy it might be promoted as an ad
Explanation:
The answer to the question is D
Basically what happened was the population went through a population bottleneck in the 1800s which then resulted in the only way for future offspring was a lot of positive assortative mating which results in fewer genetic variation(similar to the founder effect for the second part)