IMO C
A minor league baseball team has for several years pressured its agency to implement an advertising campaign targeted to young supporters who need a superstar to idolize and older fans who enjoy reminiscing about the beginning days of the sport.
Here are the splits that need attention.
Targeted to/targeted at/with the targets/targeting to ---> Targeted at is idiomatically correct
idolize and older/idolize and for older/idolize and of older/idolize and to older --> idolize and older is correct
A.
targeted to young supporters who need a superstar to idolize and older fans
B. targeted at young supporters who need a superstar to idolize and
for older fansC. targeted at young supporters who need a superstar to idolize and older fans
D.
with the targets of young supporters who need a superstar to idolize and of older fans
E.
targeting to young supporters who need a superstar to idolize and to older fans