Answer:
the amount of liquid in which the object was submerged
Explanation:
As we know that spring balance will read the spring force that is exerted by spring on the object
Now when the object is suspended by the spring then in that case the spring force is balanced by the weight so spring will read the correct mass of the object.
Now the object is suspended by the spring and then submerged into the liquid so in that case we can say


so here the reading will be less and it depends on volume of object and density of liquid
so independent variable will be
the amount of liquid in which the object was submerged