<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>
Answer:
D. Poor air quality makes breathing difficult
Explanation:
X=0 i think. I just put it in the calculator
A. buying them new at university bookstore
b. buying them online
c. buying them used
d. renting them
