Without any information i would say the industrial revolution and the pollution that occured because of it
<span>Reaction time<span>, which can either be
simple or complex refers to the time
needed for perception and evaluation of a stimulus and the time necessitating a response. A </span></span><span>complex reaction time
involves selecting a specific and correct response from several choices when
presented with several different stimuli.</span>
I would think its A. the rest of the options are for people that can stand still and focus.
