minor addition

@@ -10,18 +10,15 @@ import android.util.TypedValue;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
 import android.widget.ListPopupWindow;
 import android.widget.RelativeLayout;
-import android.widget.Spinner;
 import android.widget.TextView;
 import android.widget.Toast;
 
 import androidx.appcompat.content.res.AppCompatResources;
-import androidx.appcompat.widget.AppCompatSpinner;
 import androidx.constraintlayout.widget.ConstraintLayout;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
@@ -551,7 +548,14 @@ public class HomeActivity extends Activity implements View.OnClickListener, Coup
         bottomSheetDialog.setContentView(dialogView);
 
         ImageView ivClose = dialogView.findViewById(R.id.iv_back);
-        ivClose.setOnClickListener(v -> bottomSheetDialog.dismiss());
+        ivClose.setOnClickListener(v -> {
+            if (mCurrentQuestionIndex > 0) {
+                mCurrentQuestionIndex--;
+                renderQuestion(questionnaire, dialogView, bottomSheetDialog);
+            } else {
+                bottomSheetDialog.dismiss();
+            }
+        });
 
         mCurrentQuestionIndex = 0;
         renderQuestion(questionnaire, dialogView, bottomSheetDialog);