At the speed of light our fastest current spacecraft travel at the fraction of 1/10,000. Thus the correct answer is 1.
A spacecraft is referred to as a type of vehicle designed by scientists to travel in space and help in the collection of data by observing the features of the planet and help in transporting humans to space for evaluation and research.
The speed of light is referred to as a phenomenon that shows how much is taken by light to travel to the earth. The speed of Light our fastest current spacecraft took is 1/10,000.
Therefore, option 1 is appropriate.
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The complete question is
At about what fraction of the speed of light do today's spacecraft travel?
1. 1/10,000
2. 1/2
3. 1/10
4. 1/1,000
5. 1/100
