Synonym of FICKLE

Answer: Option C

Constant : occurring continuously over a period of time.
Nervous : easily agitated or alarmed.
Changeable : liable to unpredictable variation.
Poor : lacking sufficient money to live at a standard considered comfortable or normal in a society.
Fickle : changing frequently, especially as regards one's loyalties or affections.

Synonym of Fickle is Changeable