Paragraph Comprehension

In my book entitled, The ASVAB Tutor’s Word Knowledge and Paragraph Comprehension, I review the types of questions that can appear on the Paragraph Comprehension section of the test.  Today’s question asks about cause-and-effect words.  Of the following choices, which is not a cause-and-effect word: because, since, later, and therefore.  Do you know which one is not a cause-and-effect word?  I will present the answer tomorrow