What was the event that decided a temporary outcome to the problem of Lay Investiture?

Match the person to the information contributed to luke's writings. 1. paul 2. luke 3. philip 4. eyewitnesses 5. james a. investigated everything about the life of christ b. provided firsthand descriptions of events c. may have provided text of stephen's address and the story of his martyrdom d. may have described the appointment of deacons, and the conversion of the ethiopian eunich and the samaritans e. may have provided the information about the day of pentacost