Who is NAME_1 and why is she famous?
Group of answer choices

NAME_1 discovered the Period-Luminosity relationship for Cepheid Variables which forms the foundation of the Cosmic Distance Ladder.

NAME_1 discovered the distance to the Andromeda Galaxy (M31) which put an end to 'The Great Debate'.

NAME_1 was on the winning side of 'The Great Debate' because she convincingly argued that Nebulae were outside of our own galaxy.

NAME_1 discovered the relationship between Nebulae distance and Nebulae redshift.