A teacher selects a few students from a class for a demonstration of the solar system. Each of the selected is given a placard, with name of a planet of the Solar System. Students are asked to hold the placards and take their places with the sun in the centre to create a model of solar system. What would be an appropriate criterion to select students for the given roles of the planets ?

Correct option is B

The answer is (b) Height.
The criterion of height would be most appropriate for selecting students for the given roles of the planets in the solar system. This is because the planets in the solar system vary significantly in size, and choosing students of different heights would help to represent these variations. For example, the student representing Jupiter, the largest planet, should be taller than the student representing Mercury, the smallest planet.
The other options are not relevant to the task at hand. Skin color, marks obtained in the last examination, and communication skills are not related to the size of the planets.