Complex sentence: In 1985, she began her best-known role, on "As the World Turns" as Emma Snyder, the matriarch of a new core family based on the real family of then-head writer Douglas Marland.
Split into simpler sentences: In 1985, she began her best known role as Emma Snyder on "As the World Turns". The character of Emma was the matriarch of a new core family, based on the real family of then-head writer Douglas Marland.