A.All bodies in the universe attract each other due to the gravitational force.
B.Newton's law of gravitation is based on Newton's laws of motion.✓ Correct
C.The value of g (acceleration due to gravity) is zero at the centre of the Earth.
D.Mass and weight are measured in different units.
Explanation
Newton's Law of Universal Gravitation is an INDEPENDENT law and is NOT derived from Newton's three laws of motion — it was formulated separately by Newton based on Kepler's laws and observations. Hence statement (b) is incorrect. All bodies in the universe do attract each other gravitationally (a is correct). The value of g at the centre of the Earth is indeed zero because the net gravitational pull from all directions cancels out (c is correct). Mass is measured in kilograms while weight (a force) is measured in newtons — different units (d is correct).
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