To answer this question, you need to know the various saints associated with Goa.
Option A) Blessed Joseph Vaz - This option is incorrect. Blessed Joseph Vaz is a significant figure in the history of the Catholic Church in Sri Lanka, not Goa.
Option B) Fr. Agnel - This option is incorrect. Fr. Agnel is a revered priest from Goa, but he is not known as Goemcho Saib.
Option C) St. Paul - This option is incorrect. St. Paul is an important figure in Christian history, but he is not specifically associated with Goa or known as Goemcho Saib.
Option D) St. Francis Xavier - This option is correct. St. Francis Xavier is known as Goemcho Saib in Goa. He was a Spanish Jesuit missionary who played a significant role in spreading Christianity in Goa and other parts of Asia. He is highly venerated and his body is preserved in the Basilica of Bom Jesus in Old Goa.
The correct answer is D) St. Francis Xavier. He is known as Goemcho Saib in Goa due to his immense influence and contribution to the Christian faith in the region.