Answer :
D. 1 trillion guesses per second. The NSA has developed powerful computers and algorithms that can attempt billions and even trillions of password guesses per second.
This is why it is important to use strong and unique passwords, as weak or common passwords can be easily cracked by brute force attacks.
The NSA has powerful computers, and while the exact speed is not publicly disclosed, it is believed that they are capable of attempting a large number of password guesses very quickly. The closest option among the given choices is D. 1 trillion guesses per second. However, please note that this is an estimate and the actual speed may differ.
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