Assume number = x

The given question asks for the difference between the successor and predecessor of a given number. To better understand the answer, let's break down the terms and their meanings:

- Successor: The successor of a number is the number that comes immediately after it when counting in order. For example, the successor of 5 is 6, the successor of 10 is 11, and so on.

- Predecessor: The predecessor of a number is the number that comes immediately before it when counting in order. For example, the predecessor of 5 is 4, the predecessor of 10 is 9, and so on.

Now, let's consider an example to find the difference between the successor and predecessor of a given number:

Let's say the given number is 7. We need to find the difference between its successor and predecessor.

- The successor of 7 is 8.
- The predecessor of 7 is 6.

To find the difference, we subtract the predecessor from the successor:

8 - 6 = 2

Therefore, the difference between the successor of the given number (7) and the predecessor of the same number is 2.

In general, we can conclude that the difference between the successor and predecessor of any number is always 2. This is because the successor is always 1 more than the given number, while the predecessor is always 1 less than the given number. So, when we subtract the predecessor from the successor, we will always get 2 as the difference.

Hence, the correct answer is option 'C' - 2.