Concept:Planets closer to the Sun than Earth are those that appear before Earth in the order of distance from the Sun.
Explanation:The planets orbit the Sun in a fixed order based on their average distance from it.
Starting from the Sun, the order is: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.
Earth is the third planet from the Sun.
Therefore, only planets listed before Earth are closer to the Sun than Earth.
These planets are Mercury and Venus.
Mercury is the first planet from the Sun.
Venus is the second planet from the Sun.
Both are located between the Sun and Earth, so they are closer to the Sun.
Mars is farther from the Sun than Earth, not closer.
Similarly, Saturn lies far beyond Earth in the solar system.
So options containing Mars or Saturn are incorrect.
Answer:The correct option is B. Venus and Mercury.