When word flags a possible spelling or grammar error, it also changes the spelling and grammar check icon to a(n) . black circleb. green check markc. xd. red check mark

The correct answer to the following question will be Option C (X).

Explanation:

The feature Spell Check in Word will help you find out the spelling and grammar errors in the Word document quickly. In Word 2007, 2010, 2013, 2016, 2019 and 365 there will be four easy ways to name the feature Spell Check.Whether you make a mistake in your spelling or grammar when using Word, the app will automatically switch the Grammar and spelling Check icon to such an "X". This helps to warn the users that a spelling or grammar error has occurred.

Therefore, Option C is the right answer.