Answer:
The effect of the repetition of lines of the poem Brennan on the moor "Brennan on the moor, Brennan on the moor/ bold and undaunted stood young Brennan on the moor" has the meaning that Brennan is most undefeatable opponent and that the narrator wanted the reader to remember Brennan as a mighty warrior. I know this because in the text it says “Brennan on the moon. Brennan on the moon. Bold undaunted stood young brennan on the moon”
Step-by-step explanation: