Question

only the layer can be activate at a time
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Answer 1

Answer:

Only one layer can be active at a time (although more than one layer can be selected at a time). When you create an Animate document, it contains only one layer. To organize the artwork, animation, and other elements in your document, add more layers. You can also hide, lock, or rearrange layers.

Answer 2

Explanation:

you can activate one layer at a time