A form of matter has no fixed shape but it has a fixed volume. An example of this form of matter is

Correct answer: (c) Kerosene

Explanation

A substance with fixed volume but no fixed shape is a liquid, taking the shape of its container.

Kerosene is a liquid, so it has a definite volume but no definite shape.

Carbon steel is a solid (fixed shape and volume) and Krypton is a gas (no fixed shape or volume).