Cut and Paste is the correct operation to perform if you need to move a block of text.

Explanation:
Cut and Paste is a common operation used to move text from one location to another within a document or between different documents. This operation involves two steps: cutting the text from its original location and pasting it to the desired location.

1. Selecting the text:
To perform the cut operation, you first need to select the block of text you want to move. You can do this by clicking and dragging the cursor over the text, or by using keyboard shortcuts such as Ctrl + A (to select all) or Shift + arrow keys (to select a specific portion of text).

2. Cutting the text:
After selecting the text, you can cut it by using the Cut command. This command is usually found in the Edit menu of most word processing or text editing software, or it can be accessed through the keyboard shortcut Ctrl + X. Cutting the text removes it from its original location and stores it in a temporary storage area called the clipboard.

3. Pasting the text:
Once the text is cut and stored in the clipboard, you can navigate to the desired location where you want to move the text. Then, use the Paste command to insert the text at the new location. The Paste command is typically found in the Edit menu or can be accessed through the keyboard shortcut Ctrl + V. Pasting the text inserts it at the cursor position or replaces any selected text at the new location.

Key Points:
- Cut and Paste is used to move a block of text from one location to another.
- The selected text is first cut using the Cut command (Ctrl + X).
- The cut text is stored in the clipboard temporarily.
- The text is then pasted at the desired location using the Paste command (Ctrl + V).
- Cutting removes the text from its original location, while pasting inserts it at the new location.
- This operation can be performed using menu options or keyboard shortcuts in most word processing or text editing software.