What percentage of herbicides applied to crops actually reach the target weeds? 

A)  about 50% 
B)  about 25% 
C)  about 5% 
D)  about 1%

Herbicides

Chemical substances used to control or kill unwanted plants (weeds), without causing harm to the desired crops.

Target Weeds

Specific unwanted plant species that are the focus of control or eradication efforts in agricultural or horticultural practices.