Final answer:
The survival rate of offspring in a breeding population with an increased survival rate should initially increase as well, but over a period of 5 years, it could fluctuate due to environmental variables and carrying capacity.
Step-by-step explanation:
As the survival rate of a breeding population increases, theoretically, the survival rate of its offspring should also increase, at least initially. This is because the parents that are surviving better are likely to pass on their advantageous traits to their offspring, improving the offspring's chance of survival. However, the actual outcome can vary and be influenced by many factors such as environmental changes, resource availability, and carrying capacity of the environment. Therefore, without additional context, predicting the exact trend in survival rates over a period of 5 years is challenging, and it could fluctuate (D) due to these factors.