Final answer:
Traction to the left or right RLN results in Unilateral vocal cord paralysis, affecting the vocal cord on the corresponding side with symptoms like hoarseness or breathy voice.
Step-by-step explanation:
If there is traction to either the left or right Recurrent Laryngeal Nerve (RLN), the correct answer is Option 1: Unilateral vocal cord paralysis. The RLN innervates muscles that control the vocal cords; thus, damage or traction to the nerve can lead to paralysis of the vocal cords on the affected side. If there is unilateral injury, this results in paralysis of the corresponding vocal cord, leading to vocal hoarseness or breathy voice, and potentially difficulty swallowing or coughing. Bilateral vocal cord paralysis would require damage or traction to both RLNs, which is not implied in the question. Increased vocal cord function or no effect on vocal cords are not consistent with the neuroanatomy associated with RLN damage.