The central vacuole stores materials, wastes, and helps give the plant structure and support.
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The answer is salinity, salinity is the saltiness or dissolved inorganic salt content of a body of water.
The volume of object is 3.2 ml
<h3>Explanation:</h3>
Given:
Mass of the object = M = 9.6 g
Initial volume of liquid: 
Final volume of liquid after displacement: 
Total volume of the displaced object inside a graduating cylinder will be given as difference between the final volume and initial volume of the expanding object.

V = 3.2 ml