Changing Font Size in Word using CTRL SHIFT PCtrl Shift P is the correct shortcut to change the font size in Microsoft Word. This shortcut is commonly used by individuals to quickly modify the size of selected text within a document. Let us discuss in detail how this shortcut works and the steps involved in changing the font size using this combination.

Explanation:
1. Open Microsoft Word: To begin, open Microsoft Word on your computer. You can do this by double-clicking on the Word icon present on your desktop or by searching for it in the Start menu.

2. Select the Text: Next, select the text for which you want to change the font size. You can do this by clicking and dragging the cursor over the desired text or by using the keyboard arrow keys to navigate to the specific text.

3. Press CTRL SHIFT P: Once the text is selected, press and hold the CTRL key on your keyboard. While holding the CTRL key, press and hold the SHIFT key as well. Finally, press the letter "P" on your keyboard. This combination of keys (CTRL + SHIFT + P) will open the Font dialog box.

4. Modify Font Size: After the Font dialog box appears, you can modify the font size using various options. You can either enter a specific font size in the Size box or use the increase/decrease buttons provided. Additionally, you can also select a font size from the drop-down list of available sizes. Once you have made the desired changes, click on the "OK" button to apply the new font size to the selected text.

Conclusion:
In conclusion, the correct CTRL SHIFT shortcut to change the font size in Microsoft Word is CTRL SHIFT P. By following the steps mentioned above, you can easily modify the font size of selected text within a Word document. This shortcut can be quite handy when working with documents that require frequent font size adjustments, allowing you to efficiently format your text.