6803. He was the only reckless worker in the entire staff.

✅ The correct answer is option B.
Bold : (of a person, action, or idea) showing a willingness to take risks; confident and courageous.

Rash : acting or done without careful consideration of the possible consequences; impetuous.

Courageous : not deterred by danger or pain; brave.

Daring : (of a person or action) adventurous or audaciously bold.

Reckless : heedless of danger or the consequences of one’s actions; rash or impetuous.

Synonym of Reckless is Rash