Answer:
A: the shrine of St. Thomas à Becket is there.
Explanation:
The pilgrims (all from the three medieval states: church, nobility, and peasantry) are traveling to Canterbury because the springtime is when they choose to go on a pilgrimage along with other travelers from different parts of England. They all have in commom to visit the shrine of Saint Thomas à Becket in order to seek help and blessing from this martyr.
