Question: What Spanish Priest founded the Order of Preachers?

Is Membership in this "mendicant" order includes friars, nuns, active sisters, and lay or secular Dominicans (formerly known as tertiaries, though recently there has been a growing number of Associates, who are unrelated to the tertiaries) affiliated with the order. a good answer to this question?

Options are: [i] yes [ii] no
[ii]