Really good, well written, EMIs strive to test synthesis and application of knowledge rather than recollection of isolated facts. This is as often an aspiration as an achievement.
Nevertheless, some of the answers are deliberately ambiguous. The question always requires you to select the most appropriate answer. There may be more than one answer that might fit the question... but only one which is most appropriate. You may even have to think about it.
These questions are approximately in the style of the EMIs used in Core Knowledge assessments
For example... I like questions which have numbers for answers... I like to include (and use) "none of the above" as an option... I tend to write short questions... and so on. There are many contributors to the exams... all with their own unique style of question writing.