Answer :
The correct answer is c. one in which the environment undergoes sudden, drastic changes. This situation would be the least beneficial for a species to reproduce asexually rather than sexually. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help.
Correct answer: C). One in which the environment undergoes sudden, drastic changes
Asexual reproduction is defined as a mode of reproduction, in which only one parent is responsible for carrying out the process of reproduction, it do not involve fusion of female and male gamete.
As the offspring that results from the asexual reproduction have same genetic makeup and physical appearance, it means they do not have any variation, so in the case of sudden changes they are not able to survive and cope up with the changes.
Hence, the correct answer would be option C.