When was the current Texas constitution adopted

a. 1827

b. 1836

c. 1845

d. 1876

The correct answer is d.

The current Texas constitution took effect in February 1976. Before that there were 6 others: In 1969, 1866, 1861, 1845 (so c. was also the date of a constitution, but not the last one), 1836 (answer b, at that time it was The republic of Texas) and finally in 1827 - as part of Mexico (see question a).

So all the options show the dates of Texas constitutions, but we have to choose the current one: 1876.