Which of the following interdental aids is made from soft nylon filaments formed into a narrow cone shape?

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An end-tuft brush is made from soft nylon filaments.It is useful for cleaning areas that are difficult to reach with a regular toothbrush,such as those affected by orthodontic appliances,fixed bridges and space maintainers,and proximal tooth surfaces next to open embrasures.
Bridge threaders are used to pass dental floss under the pontic of a fixed bridge.They are used with regular dental floss.A piece of dental floss is looped through the circular part of the bridge threader.The straight part of the threader is slipped under the pontic,and the floss is pulled through.
Automatic flossers have one-use,replaceable,thin rubber filament tips.The tip is inserted into the interproximal space.
A toothpick is used as a component of the perio-aid.A perio-aid is a handle with holes in the end designed to hold toothpicks.

Which of the Following Interdental Aids Is Made from Soft