The $n$-th number in the Fibonacci sequence is called the Fibonacci number.

The correct answer is B. The nth number in the Fibonacci sequence is called the Fibonacci number.

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Here are 5 related questions you might find interesting:

1. What is the formula for finding the nth Fibonacci number?
2. How does the Fibonacci sequence relate to the golden ratio?
3. Can Fibonacci numbers be prime? If so, which ones are?
4. What is the sum of the first $n$ Fibonacci numbers?
5. How is the Fibonacci sequence used in nature and mathematics?

Tip: The Fibonacci sequence starts with 0 and 1, and each subsequent number is the sum of the previous two.