which step is first in changing the proofing language of an entire document?

a: click the language button on the status bar.
b: select the whole document by pressing ctrl+a.
c: under the review tab on the ribbon in the language group, click the language button and select set proofing language.
d: run a spelling and grammar check on your document before changing the language.

Option C  is the right answer.

Explanation:

Step 1: Open the Word application

Step 2: Click on Review tab => Spelling and Grammar => Set Proofing language option

Step 3: Select the desired language

Step 4: Click on Ok

Option A is not suitable because Language button is not present on the status bar

Option B: The proofing language is for the whole document, so selecting particular text is invalid here.

Option D: Spelling and Grammar would check only for the selected language, so it is always essential to set the proofing language first.

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

Explanation:

Step 1: Open application Word.

Step 2: then, click on the Review tab then, Grammar and Spelling after this, set option of proofing language.

Step 3: Select the language you want and click OK.

The other three options are not the right options because in Option A (there is no language button present on the status bar), in Option B (the selecting option by pressing Ctrl+A is invalid here) and in Option D (only selected language can be corrected by Spelling and Grammer).

So, Option C is the right answer.