what word processing feature saves you the most time when keying a document a. Thesaurus
B. WYSIWYG c. Find-and-replace d. Hitting the delete key

The word processing feature saves you the most time when keying a document is C. find-and-replace. Hitting ctrl+G in a document like MS Word helps one to currently find a word and replace each of this word with another word one wishes to replace. Answer is C then