No 2 Completely white. Maybe a bit on the pinkish side (I'm colorblind).
I wish I knew the names of these Hibisci (pl?)
If the pure white flowers are large, averaging 10” plus inches in diameter this is almost assuredly Blue River II by Dr. Harold F. Winters. The leafs are also consistent with this identification. Just Google “Hibiscus Blue River II” for more information.
Looks like my Blue River. It just bloomed and is a new plant about 3 months old.