Which of the following planets of our solar system has least mass?

Which of the following planets of our solar system has least mass?

Neptune
Jupiter
Mars
Mercury
This question was previously asked in
UPSC CDS-1 – 2019
The correct option is D.
Comparing the masses of the given planets:
– Neptune: approx. 1.02 x 10^26 kg
– Jupiter: approx. 1.90 x 10^27 kg (most massive in the solar system)
– Mars: approx. 6.42 x 10^23 kg
– Mercury: approx. 3.30 x 10^23 kg
Comparing these values, Mercury has the smallest mass. In fact, Mercury is the smallest planet in the solar system both in terms of mass and radius.
The order of planets by mass (from least to most massive) is: Mercury, Mars, Venus, Earth, Uranus, Neptune, Saturn, Jupiter.