Refer to the Following Information to Answer the Question(s) Below

Refer to the following information to answer the question(s) below:
Describing her company's revolutionary design for a bottle cap, Kyoto says, "It has a special locking mechanism that you know is engaged when a red panel is showing through this little window on top of the cap. If you want to keep unauthorized hands-for instance, those of children-from opening the bottle, you engage the locking mechanism. Unlike other childproof caps, however, this design does not frustrate adults who might have arthritis and elderly people whose grip may not be as strong as it once was."Removing the cap from the bottle in no time with just a few turns, Kyoto says, "They can open the cap quite easily by disengaging the locking mechanism this way ... see? You get the safety of a childproof cap without the problems most adults have getting them off!"
-The fact that with Kyoto's new cap "you get the safety of a childproof cap without the problems most adults have getting them off" is a ________ of the product.

A) feature
B) trait
C) benefit
D) attribute