Updates

app.py

@@ -154,8 +154,8 @@ if not current_question.get('answered', False):
     selected_answer = st.radio(
         "Choose an answer:", 
         options=current_question['options'], 
-        index=-1,  # Ensures no option is pre-selected
-        key=f"question_{st.session_state.current_index}"
+        key=f"question_{st.session_state.current_index}",
+        index=None  # No pre-selection
     )
 
     if st.button("Submit"):