Question

a) cannot be determined
b) 31.0 ml
c) 18.0 ml
d) 13.0 ml
e) 1.03 g/ml
f) 18.45 g

Explanation:

The problem is about finding the volume of an object using water displacement. The initial volume is 13.0 mL and the final volume is 31.0 mL. The volume of the object is the difference between the final and initial volumes, so \( 31.0 - 13.0 = 18.0 \) mL. Option C matches this calculation. Options B is the final volume, D is the initial volume, E is density, F is mass, and A is incorrect as it can be determined.

Answer:

C) 18.0 mL