The correct answer is C. Campaign. The correct spelling is "campaign".
A. Cureable is a word that means "able to be cured". It is spelled correctly.
B. Currency is a word that means "money in general circulation". It is spelled correctly.
D. Chronicle is a word that means "a written account of important or historical events in the order of their occurrence". It is spelled correctly.
C. Campaign is a word that means "a series of planned activities that are intended to achieve a particular goal". However, it is spelled incorrectly in the question. The correct spelling is "campaign".
