Final answer:
The repetition of 'struggle' emphasizes both the difficulty of the situation and serves as a rhetorical device to underscore the speaker's message.
Step-by-step explanation:
The repetition of the word struggle four times in a given speech is likely utilized as a rhetorical device to highlight both the difficulty faced and the need for perseverance. Repetition serves to reinforce the overall message and aids in the readers' recollection and understanding of the theme. A single word can be emphasized to create a powerful impact, draw the listener’s attention, and imbue a sense of continuity in the speech or writing.
For example, in Martin Luther King Jr.'s iconic 'I Have a Dream' speech, the repetition of the titular phrase underscores his vision for equality and civil rights, riveting the attention of his audience. In Chief Joseph's surrender speech, repetition highlights the arduous conditions and tragic outcomes of their struggle. The repeated use of 'struggle' could fulfill multiple purposes, but the direct answer to the student's question would be D. Both A and C it emphasize both the difficulty and employ repetition as a rhetorical strategy.