a. was played up by temperance pamphleteers to show the hazards of alcoholism.
b. resulted from his leading an anti-abolitionist mob that attacked William Lloyd Garrison.
c. convinced many northerners that slavery was incompatible with white Americans’ liberties.
d. demonstrated that fugitive slaves like Lovejoy faced great dangers while escaping from "slave catchers."
e. led Congress to adopt the gag rule to prevent the sort of heated arguments that caused his death.
Explanation: He was shot and killed by a pro-slavery mob, during the raid on Benjamin Godfrey and W. S. Gillman's warehouse to destroy Lovejoy's press and abolitionist materials.