Which of the following words is closest in meaning to “Redundant”?

Redundant means no longer needed; unnecessary.

• Correct answer - unnecessary: it has the same meaning as Redundant.
• defective: faulty - wrong, it does not mean the same as Redundant.
• turning back: returning the way one came - wrong, it does not mean the same as Redundant.
• overflowing: spilling over the edge - wrong, it does not mean the same as Redundant.