Answer:
Alliteration, Imagery.
Explanation:
In the given lines from 'General Prologue to Canterbury Tales', Chaucer employs imagery as well as alliteration to depict the time of the year when holy pilgrimage takes place i.e. 'April.'
Through the use of imagery, he offers a beautiful description of April during Springtime through vivid images of peace and tranquility. It helps the author to provide a sensory experience to the readers through which they can visualize the renewal brought by spring's 'sweet showers' after the 'dry' March. It helps the readers to imagine the wonderful time during which the pilgrims go for holy pilgrimage. The use of alliteration in 'sweet showers' gathers readers' attention and enhances the impact and serenity brought by spring.
