Answer:
A) Agents
Hope that helped! I wasn't 100% sure but I hope this is right. If it's wrong, please tell me! Have a good day!
Answer:
The galaxies are moving away from Earth because the fabric of space itself is expanding. While galaxies themselves are on the move — the Andromeda Galaxy and the Milky Way, for example, are on a collision course — there is an overall phenomenon of redshift happening as the universe gets bigger.
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B :) :) :) :) :) :) :) :)