It was found in an area about 15 metres higher than the main underground river branch inside the cave,(27) ___________ it look like it was 'floating' on the cave wall.

                       A. giving: đưa, cho, tặng

                        B. making  : làm   / make it look like: làm nó trông giống                

                        C. creating : sáng tạo                   

                        D. setting : đặt, bố trí