An independently rotating large cup affixed to the top of a fence prevents the hands of intruders from gripping the top of a fence to climb over it.What is the name for this technology?
A)bollard
B)fence
C)roller barrier
D)top hat

Question

Quizplus · Accepted Answer

The technology being described is a roller barrier, as it consists of a rotating cup that prevents intruders from gripping the top of a fence to climb over it. Bollards are vertical posts used to prevent access to a particular area, and a fence is a barrier made of posts and wire/metal that encloses an area. A top hat is a type of hat worn on the head.

An Independently Rotating Large Cup Affixed to the Top of a Fence