Final answer:
Citizens of the Republic of Texas were granted the freedom of religion, speech, and assembly. These rights aligned with those outlined in the United States Bill of Rights, encompassing 'd) All of the above'.
Step-by-step explanation:
With the establishment of the Republic of Texas, citizens were granted several liberties as a part of the new constitution and governance, similar to those provided by the United States Bill of Rights. Among these liberties were the freedom of religion, the freedom of speech, and the right to assemble.
Therefore, the correct answer to the question of what liberties citizens of Texas were granted includes all of these freedoms which can be succinctly described as 'd) All of the above'. These rights were cherished and demanded by the American settlers, often contrasting with the Mexican laws of the time. The American settlers, unlike the tejanos, were typically slave owners and remained religiously distinct, exercising their rights to practice religion freely and speak openly in the new Republic.