A comparison is being made between the cafeterias of these two schools. In the given statement, the cafeteria of the underlined school isn't mentioned at all, option D is incorrect. By adding an apostrophe and an s, ('s) after the name of the school, it is indicated that the cafeteria of the second school is compared to that of the first, making option C correct. 'Those' is used for plural countable nouns hence this option is incorrect since we are comparing one cafeteria to another. Option B is also incorrect, keeping in mind the structure of the first part of the sentence, which ends with an 's followed by the cafeteria. If the statement had started this way, 'The cafeteria of St. Aloysius High School', then option B would've been correct, otherwise in this case it's wrong.