-advertisement-
You answered "B". Click "CONTINUE" to proceed to the next question.
Interesting fact:
If you are lucky enough to live to 2061, you might see Halley’s Comet. Discovered in 1704 by Edmond Halley, the famous comet was last seen in 1986 and is only seen every 75 to 76 years. It is the only comet that is visible to the naked eye from Earth and the only one that might appear twice in a human lifetime.