a. such a correlation can ruin a perfectly good bowl of      
   alphabet soup.  <p>

b. as shown by the two panels, a correlation based on        
   averages may be only moderate, while one based on         
   individuals may be close to 1.  <p>

c. replacing individuals by averages doesn't affect the      
   correlation coefficient.  <p>

d. a correlation based on individuals may be only moderate,  
   while one based on averages may be close to 1. 
 
 	
 e. an ecological correlation can be excessively beneficial to
   the enviroment.  <p>

: Exactly 1 of the five choices a,b,c,d, and e results in a
true statement. <p>