Final answer:
The repetition in the third stanza of Tennyson's poem "The Charge of the Light Brigade" conveys the soldiers' dangerous situation and their bravery.
Step-by-step explanation:
The repetition in the third stanza of Tennyson's poem "The Charge of the Light Brigade" affects the reader by conveying the intense and chaotic nature of the soldiers' situation. The repetition of the word "cannon" emphasizes the soldiers being bombarded from all sides, resulting in a feeling of danger and impending doom. The repetition also creates a sense of rhythm and momentum, highlighting the soldiers' bravery and determination as they continue to ride forward despite the overwhelming odds.