diff --git a/4_Exploratory_Data_Analysis/quizzes/quiz1.md b/4_Exploratory_Data_Analysis/quizzes/quiz1.md
index f83aeb91..1e1ede2a 100644
--- a/4_Exploratory_Data_Analysis/quizzes/quiz1.md
+++ b/4_Exploratory_Data_Analysis/quizzes/quiz1.md
@@ -16,7 +16,8 @@ Which of the following is a principle of analytic graphics?
 
 Answer Options: </br>
 Integrate multiple modes of evidence </br>
-Show comparisons
+Show comparisons</br>
+Show causality, mechanism, explanation
 
 Question 2
 ----------