The answer would be ayuda.
<span>the original word root of salary is : C. salt
The word orignated from the medieval time. During that period, the soldier's annual payment was not money, but it's in a form of metal , which they often exchanged with salt right after they recieved it, and as the time progressed, the payment now called a salary</span>
Simile B and metaphor could be A or C they both are metaphors.
Well, <span>I think it's correct. </span>I don't see any mistake there.