Answer: The answer is (d) m∠KLM = m∠MLN.
Step-by-step explanation:
Given that the line LM is the angle bisector of ∠KLN. We are to select the correct one from the given four options.
We know that an angle bisector of an angle divides the angle into two angles of equal measure.
Since LM bisects ∠KLN, so it will the angle into two angles ∠KLM and ∠MLN of equal measure. That is
m∠KLM = m∠MLN.
Thus, the correct option will be (d).