Step 1: About the text.
Buddhaghosuppatti is a Pali text that narrates the life and contributions of the famous commentator Buddhaghosa.
Step 2: Authorship.
This text was composed by Buddhadatta, a contemporary scholar of Buddhaghosa.
Step 3: Analysis of options.
- (1) Sāriputto: A great disciple of Buddha, not the author.
- (2) Buddhadatta: Correct author of Buddhaghosuppatti.
- (3) Mahāmaṅgala thera: Not related to this text.
- (4) Dhammapāla: Wrote commentaries, not this biography.
Step 4: Conclusion.
Thus, Buddhadatta is the correct author of **Buddhaghosuppatti**.