Answer:
I believe the answer A.
Step-by-step explanation:
A coin has 2 sides - heads and tails.
A fair number cube has 6 sides - 1, 2, 3, 4, 5 and 6.
When doing a tree diagram, you show all the possible outcomes that you can get.
<em>The other options either have missing numbers from the cube, a missing side from the coin, or both.</em>
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Hope this helped. :)
