Silas is planning on configuring various default options in PowerPoint 2016. Which tab will provide him with the ability to modify
the Autocorrect options?

Silas has to navigate to File|Options->Proofing-> Auto Correct options ->Auto Correct tab so as to modify  the Auto correct options

Explanation:

PowerPoint Auto Correct feature automatically corrects common typos and spelling errors.

Step 1:Launch PowerPoint 2016 for Windows, and choose File | Options

Step 2:This opens the PowerPoint Options dialog box. Click the Proofing option within the sidebar to view the options on the right side of the dialog-box

Step 3:Click the Auto Correct Options button.This summons the Auto Correct dialog box. Note that this dialog box has several tabs, make sure you select the Auto Correct tab

Hence, File|Options->Proofing-> Auto Correct options ->Auto Correct tab must be used to modify  the Auto correct options

i think the answer is b.

answer(a) occurs after your prediction;