The state of matter which have fixed volume but lack definite shape is :
Liquid
concept : State of matter
Explanation for correct option: (B) Liquid.
Definition: The state of matter which have fixed volume but no definite shape is called liquid.
Explanation for incorrect option:
(A) Solid : solid have definite shape and volume.
(C)Gases: Gases have no definite shape and no definite volume.
(D)Plasma: Plasma is the fundamental state of matter like solid and liquid.
The state of matter which have fixed volume but no definite shape is called liquid.