Is that a C change or a sea change?

Which is correct?

Google Wave was expected to enable a ________ in  business collaboration but it didn’t play out that way. a. C change b. sea change

Answer: b.

Explanation:
Sea change means transformation. I was surprised to see people searching for the meaning of C change, but they’re out there. C change is an eggcorn — a word or phrase mistakenly used because it sounds like the correct term.

“Sea change” originated in Shakespeare’s play “The Tempest,” which was written about 1610. Ariel sang the following in a song to Ferdinand, describing the physical transformation that the sea had wrought in his drowned father.

Full fathom five thy father lies;
Of his bones are coral made;
Those are pearls that were his eyes:
Nothing of him that doth fade
But doth suffer a sea-change
Into something rich and strange.

According to Michael Quinion of World Wide Words, “sea change” first began to be used metaphorically in the late nineteenth century.  Read more