Final answer:
The correct answer is option 2. b, where 'convertednamefields' contains the original 'namefields' with all hyphens replaced by the value of 'newchar'.
Step-by-step explanation:
The content of convertednamefields after replacing all occurrences of '-' in namefields with the value of newchar is that convertednamefields will contain the original namefields with all hyphens replaced by newchar. Therefore, the correct answer is option 2. b. convertednamefields contains the original namefields with all hyphens replaced by newchar.