Engineering controls<span> are methods that are built into the design of a plant, equipment or process to minimize the hazard. </span>Engineering controls<span> are a very reliable way to </span>control<span> worker exposures as long as the </span>controls<span> are designed, used and maintained properly. </span>
The correct option is B. Placing used needles in a sharps container is not an example of an engineering control.
Engineering controls are practices designed in an attempt to reduce or even eliminate the exposure of a human being to chemical and other physical hazards by using or substitution of engineered machinery or tools.
The basic types of engineering controls are: process control, enclosure and/or isolation of emission source, ventilation.