Answer:
2.The subsequent generations will be less diverse than the original population
Step-by-step explanation:
A larger population means that there are more genetically diverse organisms in a population. As a result, there will be more genetic diversity in a larger population as compared to a smaller population.
When any disaster occurs, resulting in wiping a larger portion of the population, then the population becomes lesser. As a result, the genetic diversity of the population also decreases.
Hence, a disaster such as the one described in the question will lead to lesser genetic diversity in the coming generations.