Paragraph Comprehension

In my job as an ASVAB tutor, Paragraph Comprehension is one of the subjects I review.  In reviewing Paragraph Comprehension, I discuss the different types of questions that can appear on the ASVAB.  One type of question is a cause-and-effect question.  Yesterday I presented a question on cause-and-effect words.  Four choices were presented and one of them is not a cause-and-effect word.  The four words are: because, since, later, and therefore.  Which one is not a cause-and-effect word?  The answer is “later”.  Later is a sequence word not a cause-and-effect