The most correct answer is c. The males attach themselves to the female and physically fuse with her.
While all the options suggest adaptations that might help anglerfish survive, the unique reproductive strategy of male anglerfish physically fusing with females allows them to directly ensure their species' continuation. This adaptation can be seen as a significant factor in their survival and reproductive success, which is particularly crucial for a species' longevity.
However, it's important to note that options a and b, while they describe interesting aspects of anglerfish biology, do not directly relate to the likelihood of their extinction. Therefore, option c is the most relevant to the question of extinction.
If the question is asking which statement accurately supports the notion that anglerfish are less likely to become extinct, then option d. All of the above could be considered if you interpret it as recognizing that all discussed factors might contribute to their survival in different ways—but c is the strongest individual point related to their reproductive success.