Begins with match types are used to eliminate or remove any trailing URL parameters so you can use this to match the identical characters from the beginning of the string up to your last specified character of the string. In this case, the beginning of the string is different only in the case of /order/complete.php. In all other options, the beginning of the string is the same as that of the URL goal.
This question is a part of the Google Analytics Individual Qualification. You can get all the answers with detailed explanation for this exam in our Google Analytics Individual Qualification Exam Answers page.