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Question
Which planet in our solar system is nearly as big as the earth ?
Options:
A .  Venus
B .  Pluto
C .  Mars
D .  Mercury
Answer: Option A
Answer: (a)Venus is often referred to as our sister planet because of similarities in size, mass, density and volume. It is believed that both planets share a common origin forming at the same time out of a condensing nebulosity around 4.5 billion years ago.

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