The correct answer to the question is A). Mass i.e the quantity of matter that an object contains is mass.
EXPLANATION:
The mass and weight are two different physical quantities of a body.
The weight of a body is the force with which a body is attracted towards the centre of earth. Hence, it is vector quantity.
Mathematically, it is the product of mass of the body with acceleration due to gravity.
Β It is written as W = mg.
In comparison to weight, the mass of a body is a scalar quantity.
The mass of a body is defined as the amount of matter that is contained by a body irrespective of volume or any forces acting on it.
For non-relativistic situation, the mass of a body is always constant. It is unaffected by gravity also.
For relativistic phenomenon, the mass of a body is appeared to be increasing when a body moves with a velocity compared to velocity of light.