Consider the following:
1. Spirit
2. Opportunity
3. Curiosity
4. Mangalyaan
Which of the above is / are Mars Exploration Rovers?

Answer: [C] Only 1, 2 & 3

A rover moves on the surface of the Mars / other planetary body. Mangalyaan is not a rover.

This question is a part of GKToday's Integrated IAS General Studies Module