Answer:
But.
Explanation:
Replace the period after the first fundraiser with but and uncap a
1. nature
2. society
3. others
4. self
I believe it is the 1st one, however I am only in middle school so I would wait for another answer to be 100% sure.
Sentence 1 is the topic sentence. other sentences are based on 1 to support sentence 1, elaborating the topic sentence.
