What process do producers use to make their own food?

• A. Photosynthesis
• B. Cellular respiration
• C. Fermentation
• D. Decomposition

Answer: (A)

Producers like plants and algae make their own food through photosynthesis. They use light energy captured by chlorophyll to convert carbon dioxide and water into glucose, a type of sugar, and release oxygen. This stored chemical energy in glucose powers the plant’s growth and metabolism and provides the base energy source for almost all other organisms. Among the options, this is the only process that builds organic matter from inorganic ingredients using light energy. Cellular respiration releases energy from stored sugars, fermentation happens without sufficient oxygen, and decomposition breaks down dead material. So, the process that allows producers to create food from basic ingredients using light is photosynthesis.