You will decide who is correct after reading about photosynthesis.

Plants release oxygen. The plants combine carbon dioxide, water, and light to create energy. The carbon dioxide come from the air, the water comes from the ground where the plant's roots suck it up from the soil, and the light comes from the sun. The plant needs all three of these things to create energy through a chemical reaction that creates sugar and oxygen. The plants use the sugar for energy and the oxygen is released back into the air around the plants.

So photosynthesis means plants taking gas CO₂ (carbon dioxide)from the atmosphere, and water (H₂O) to make make sugar (C₆H₁₂O₆) and release oxygen (O₂) as a by-product. In order to do this "food", the plants need energy, and this is the energy that comes from the light (photons). This light is captured by pigments in the plants, like chlorophyll ; the stuff that makes plants green.