What word in the sentence is a participle. do not skate on frozen ponds

However, the idea of real-life people living in what would become the united states for thousands of years before columbus ever left spain never dawned on me. what would be the best way to revise this sentence for greater clarity? a) however, the fact that columbus left spain thousands of years after people settled what would become the united states never dawned on me. b) it never dawned on me, however, the idea of real-life people living in what would become the united states for thousands of years before columbus ever left spain. c) however, the fact that people were already living in what would become the united states for thousands of years before columbus ever left spain never dawned on me. d) however, the idea never dawned on me that long before columbus ever left spain, real-life people lived for thousands of years in what would become the united states.

Is the point in the oaqs method where you would you look for more information, a definition, or interpretation.

How is time represented in “persistence of memory” by salvador dali? what effect does dali achieve? can writers use similar techniques in written works? how would writers achieve this with words?