D it is because its .a5.g1
Adware. Adware displays ads and popups. The other options are completely different from each other
The answer to the given picture is - Microsoft word's spell checker only recognizes very common words. Microsoft word has it's own dictionary which will be compared to the texts on your document. If they see an unfamiliar word they will underline it with red. Anyways you can add your own words and names to the custom dictionary.
Not really is she wants the words that she's typing down sometimes it's not necessary to leave it to the auto correct It can always be bad when re-reading it again.