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In the second state, it functions as an amplifier and operates in the active region.

1. In the first state, it remains switched on.
2. In the second state, it stays switched off.
3. In the second state, it functions as an amplifier and operates in the active region.
4. The voltage gain of the new transistor G' equals two-thirds of G.

Correct answer: In the second state, it functions as an amplifier and operates in the active region.

Solution

The active region of a transistor is where it functions as an amplifier, which matches the description in option C.

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