The correct answer is option 1: Mars and Jupiter. The asteroid belt is a region located between the orbits of Mars and Jupiter in our solar system. It is made up of numerous small rocky bodies called asteroids, which are remnants from the formation of the solar system. These asteroids vary in size, ranging from small fragments to larger objects measuring hundreds of kilometers in diameter.

Option 2, Earth and Mars, is incorrect. The asteroid belt is located beyond the orbit of Mars, so it does not lie between Earth and Mars.

Option 3, Jupiter and Saturn, is also incorrect. Although Jupiter is one of the boundaries of the asteroid belt, it does not extend all the way to Saturn.

Option 4, Venus and Earth, is not correct either. The asteroid belt is positioned farther away from both Venus and Earth.

In summary, the asteroid belt is situated between the orbits of Mars and Jupiter in our solar system, making option 1 the correct answer.