Both Option 1 and 3 work because:
"Free will is the ability to decide..." -> Passage starts with definition -> Option 1 works
Entire passage questions if humans have free will and concludes we don't -> Option 3 works
Option 2 -> Backstory mentioned but not about success
Option 4 -> Passage actually argues against free choice
Note: The original answer was 3 but there was enough ambiguity here that NTA decided to make both 1 and 3 correct after being challenged.