Correct answer: B — Implement static hedge

Barrier options are commonly traded to:

• Reduce the option’s cost: a barrier feature makes the option cheaper than a plain vanilla option.
• Add leverage to a directional view: a trader can express a bullish or bearish view with lower upfront premium.
• Reduce the cost of tail insurance: a barrier structure can provide protection against extreme moves at a lower cost than a vanilla hedge.

While barrier options can be used in hedging contexts, "implement static hedge" is not typically listed as a primary motive to trade a barrier option in this setting, so it is the exception.