Mass and weight are:

Mass and weight are directly proportional because weight is a measure of the gravitational force acting on an object due to its mass. The relationship can be expressed with the equation: weight = mass × gravitational field strength. In this equation, if the mass of an object increases, the weight increases proportionately, assuming the strength of the gravitational field remains constant. This relationship indicates that mass and weight are inherently linked; as you increase the mass, the weight increases at a constant rate, illustrating their direct proportionality.

In contrast, options indicating independence or a lack of relation fail to recognize this fundamental connection defined by gravitational physics. Similarly, stating that they are inversely proportional would imply that as one increases, the other decreases, which contradicts the basic principles of how mass and weight interact in a gravitational field.