Final answer:
The word 'ectropion' is pronounced with emphasis on the second syllable, 'Tro', as ek-TROH-pee-on. It's a medical condition where the lower eyelid turns outward.
Step-by-step explanation:
The syllable in "ectropion" that receives emphasis when pronounced is option B) 'Tro'. The correct pronunciation is ek-TROH-pee-on, with the primary stress on the second syllable, 'Tro'.
Ectropion itself is a medical condition, usually related to the eye, in which the lower eyelid turns outward away from the eyeball, and it is essential for medical students and professionals to pronounce medical terms correctly to ensure clear and accurate communication.