Which team, coached by Don Shula, remains the only NFL franchise to complete an entire season undefeated, winning all 14 regular-season games and all three playoff games including the Super Bowl?

• A 1985 Chicago Bears
• B 1972 Miami Dolphins ✓
• C 2007 New England Patriots
• D 1991 Washington

The 1972 Dolphins, coached by Don Shula, finished 17-0, and the surviving members famously pop champagne each year when the last undefeated team loses.