Question

Which of the following is most likely to result in a bottleneck event?

• A. A new mutation that leads to an allele that makes a prey species faster
• B. Introduction of a new plant species to a food web
• C. Introduction of a new predator to the ecosystem
• D. Widespread volcanic activity

Answer 1

The correct option is D Widespread volcanic activity

Bottleneck effect is caused by a natural calamity, that reduces the population to a very small size also reducing the genetic variability

So, the correct answer is 'Widespread volcanic activity'