Please choose the correct answer to the question: An object has a weight of 10 kg on the surface of Earth. If the same object were transported to the surface of Mars, the object would have a weight of 3.8 kg. Which best explains why the weight of the object changed when transported from Earth to Mars?

Answer1: The density of the object is greater on Earth than it is on Mars. Answer2: The volume of the object is greater on Earth than it is on Mars. Answer3: Gravitational force is greater on Earth than it is on Mars. Answer4: Atmospheric pressure is less on Earth than it is on Mars.

Answer format: answer1/answer2/answer3/answer4