Final answer:
Metaphors in King's speech include "desolate valley of segregation", "sunlit path of racial justice", "quicksands of racial injustice", and "solid rock of brotherhood", each representing different abstract concepts using vivid imagery.
Step-by-step explanation:
The examples of metaphors in the passage from King's speech include "desolate valley of segregation", "sunlit path of racial justice", "quicksands of racial injustice", and "solid rock of brotherhood". These metaphors illustrate abstract concepts such as segregation, justice, and brotherhood using vivid and relatable imagery. Through the metaphor of a "desolate valley", King conveys the bleak and barren state of segregation. The metaphor of a "sunlit path" suggests the hopeful and righteous journey towards racial equality. The "quicksands" metaphor communicates the dangerous and unstable nature of racial injustice. Lastly, the "solid rock" metaphor depicts brotherhood as a strong and dependable foundation for society.