Q: What planet is the easiest to observe?


Read this paragraph and choose the correct option from the provided answers:

Mars is the easiest planet to observe. As a result, it has been studied more than any other planet besides Earth. People can stand on Earth and observe the planet through a telescope. We have also sent many space probes to Mars. A car-sized robotic rover, Curiosity, arrived on the Red Planet in August 2012. Curiosity joins Opportunity, which has been active since 2004.

 Choices:

- mercury

- pluto

- uranus

- mars


A:
mars