Final answer:
The sentence from the excerpt that most strongly supports option a. 'i'd love to see more native students at washington and elsewhere' is: 'I feel as if I had ceased to be myself since I left Washington.'
Step-by-step explanation:
The sentence from the excerpt that most strongly supports option a. 'i'd love to see more native students at washington and elsewhere' is: 'I feel as if I had ceased to be myself since I left Washington.' This sentence suggests that the speaker wants to see more native students at Washington and other places because their absence makes them feel like they have lost a part of themselves.