The "Flatness" Problem Arises Because the Curvature of Space Seems

Multiple Choice

The "flatness" problem arises because the curvature of space seems remarkably close to:

A) zero curvature, favoring a spherical cosmos.
B) exactly one.
C) .5, suggesting we are split between open and closed universes.
D) 2.73 K, in spite of the eddies and turbulence that led to galaxy formation.
E) infinity, suggesting an open universe is the only possible cosmology.