Which feature defines a switchblade as described in the material?

Which feature defines a switchblade as described in the material?

• A. A fixed blade that cannot fold
• B. A blade that folds into the handle and can automatically open by pressure on a button
• C. A blade that is permanently exposed
• D. A blade that only retracts without opening

Answer: (B)

Switchblades are defined by a blade that is folded into the handle and can automatically spring into the open position when a button or lever is pressed. This one-handed deployment is the key feature that distinguishes them from other knives. The other descriptions describe blades that don’t automatically deploy or aren’t concealed in the handle (a fixed blade can’t fold, a permanently exposed blade isn’t concealed, and a blade that only retracts without opening never actually deploys). Therefore, the feature that matches a switchblade is the blade that folds into the handle and can automatically open by pressure on a button.

Switchblades are defined by a blade that is folded into the handle and can automatically spring into the open position when a button or lever is pressed. This one-handed deployment is the key feature that distinguishes them from other knives. The other descriptions describe blades that don’t automatically deploy or aren’t concealed in the handle (a fixed blade can’t fold, a permanently exposed blade isn’t concealed, and a blade that only retracts without opening never actually deploys). Therefore, the feature that matches a switchblade is the blade that folds into the handle and can automatically open by pressure on a button.