4 The image below is of Natural Bridge Cavems down the road from us here at UTSA Which sentence best describes how the caverns developed OA. Rainfall absorbs carbon dioxide in the atmosphere and soil, becomes carbonic acid, and the acid dissolves limestone to form the underground cavema OB. Extreme underground flood events that happen approximately every 100 years carve out the openings that make up the cavems. OC. Over millions of years, earthquakes along the Balcones fault zone have created the cavems OD. Rainfall absorbs nitrogen in the atmosphere and soll, becomes nitrous acid, and the acid then dissolves layers of clay sediment to form the underground cavema