The Stamp Act

a. was controversial because the tax on printed materials was imposed by Britain.
b. was controversial because it raised the cost of sending mail in the most populous colonies.
c. was accepted easily because the colonists made a conscious decision to raise additional revenues to pay for national security.
d. generated intense opposition because it raised the cost of sending transatlantic mail so that it was only available to the wealthy.

a. was controversial because the tax on printed materials was imposed by Britain.