The provided context does not contain any information about the shortcut for selecting an entire sentence in Word 365, nor does it mention Ctrl+Click behavior at all. It only documents:

• Ctrl+A to select the whole document (both desktop and web).
• Various keyboard-only selection shortcuts using Shift + arrow keys, Shift+Ctrl+arrow keys, etc.

Because the context does not state how to select a single sentence or describe Ctrl+Click behavior, no supported conclusion can be given about which MCQ option (A–D) is correct.

References:

• Select all document content in Word for the web
• Keyboard shortcuts in Word
• Keyboard shortcuts in Word Web App
• I can't block text on my word document and can't figure out why, help please!
• Strange answer to question at Practice Test (AI-900) - Microsoft Q&A
• How do I select text with a trackpad? - Microsoft Q&A
• how do I get rid of the arrows that when clicked, hide portions of my document - Microsoft Q&A
• Delete Text - Microsoft Q&A

Simple click doesn't work, and my software is already set to have Ctrl + Click open hyperlinks. If there are any other suggestions?

I created this post initially.

I ended up talking to MS Office 2nd level.  The tech solved the problem using these commands.  They worked on all 3 PCs.

Go to search bar, type cmd. Once you see the command prompt, right click on it then Run as Administrator. Once the command prompt is open. Run this command:

Dism /online /cleanup-image /scanhealth

Once its done, run this command:

Dism /online /cleanup-image /restorehealth

After this command run this;

Sfc /scannow

Now, after this, restart the computer. The issue should be rectified after the advance command

UNFORTUNATELY, the problem re-appeared yesterday on the 3 PCs.  The original problem was fixed on 3/22/16.  Since that time, two Windows Updates occurred.  I'm thinking the last one on 3/26/16, "Cumulative Update for Windows 10 Version 1511 for x64-based Systems (KB3140768)" recreated the Word's right-click problem.