The correct answer is put an end to.
A. put an end to
B. feel unwell
The correct answer is (A) To put an end to; to check or stop, especially a flow of blood.
Staunch comes from Middle English stanchen, Italian stancare (to weary)
Examples of use:
- It was necessary to staunch quickly their dependence on credit.
- She staunched the flow of blood from the wound.