One living plant leaf, still attached to the plant, is placed into a cup and covered with water. A light source is placed above the cup shining into the cub of water so that the leaf receives the light. In moments, bubbles appear at the surface of the plant leaf. Group of answer choices:

photosynthesis is occuring and bubbles of oxygen gas are being released by the leaf into the surrounding area

photosynthesis is occuring and bubbles of carbon dioxide released by the surrounding area and absorbed into the leaf

photosynthesis is occuring and bubbles of carbon dioxide gas being released by the leaf into the surrounding area

photosynthesis is occuring and bubbles of air are entering the water from the area around the plant