Choose the sentence that has a singular subject and verb. A The kittens sneak into the man's house. B The man sneezes because of his cat allergy. C The three mice hide in his basement. D His neighbors hear purring through the walls.

When conducting research online, the key word or key phrase you type into a search engine should be a. as general as possible to include all possible results. b. unchanging from search to search so that you get consistent results. c. as clearly defined as possible so in order to narrow your search. d. flexible and applicable to a variety of topics.