Why did the colonists protest passage of the stamp act? they claimed that parliament was attempting to ruin the colonial economy. they opposed their tax money being used for military purposes. they believed that without representation in parliament, they should not be taxed. they felt that the new tax did not support the freedom of speech.

The colonists protest passage of the Stamp Act because they believed that without representation in the Parliament, they should not be taxed.  

Option C

Explanation:

The "Stamp Act" was passed in the year "1765" by British Parliament. According to this act, the colonists were compelled to buy stamps for every official document they acquire. Every printable material was to be printed on "stamped paper" from London. All this was done to gather tax directly from "colonists" to pay for debts of the "French and Indian War".

The colonists believed that if they were to pay taxes then they first want representation in the Parliament, but this was disagreed by the British. Hence, the colonists started opposing the "Stamp Act" and later in the year 1766, the Parliament voted to abolish it.