Final answer:
The correct answer is option a. Paul stated to the Corinthians that he died daily, suggesting he faced severe challenges every day in his missionary work.
Step-by-step explanation:
The Apostle Paul, in his first letter to the Corinthians, mentioned the frequency with which he confronted death in the pursuit of his missionary work. Paul states in 1 Corinthians 15:31, "I protest by your rejoicing which I have in Christ Jesus our Lord, I die daily."
This passage emphasizes the regular sacrifices and risks Paul took in spreading the Christian faith, metaphorically indicating that he faced challenges each day that were so severe they were like facing death daily.