Answer:
C. the liquid the object is in
Step-by-step explanation:
this force is the force on an object due to its surrounding fluid
This force is always upwards that's why it is also known as upthrust
This force is due to pressure difference of the fluids on the object
So here when an object is immersed into the liquid then due to pressure difference which is higher on the bottom and lower on the top it exert force in upwards direction, this upthrust is known as buoyant force
so correct answer is
C. the liquid the object is in