Which verb or verb phrase completes the sentence with the appropriate verb tense

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.

Meter you are working as an apprentice for the bksb newcastle arena. an indoor sport exhibition is coming to the arena. your supervisor has asked you to set up a handball pitch and seating area as shown in the plan view below

In figure 4 of the telephone components what do the labels lettered a to e