Respuesta :
I believe it is C.
If the definition of an allusion is: an expression designed to call something to mind without mentioning it explicitly; an indirect or passing reference then this is an allusion because it calls something to mind without mentioning it explicitly, this being “feet of clay”.
If the definition of an allusion is: an expression designed to call something to mind without mentioning it explicitly; an indirect or passing reference then this is an allusion because it calls something to mind without mentioning it explicitly, this being “feet of clay”.