The correct answer is C. Consumers.
Consumers are organisms that cannot make their own food and must consume other organisms or organic matter to survive. They are heterotrophs, meaning they obtain organic molecules from other organisms. Consumers can be divided into primary consumers, secondary consumers, tertiary consumers, and so on, depending on what they eat. Primary consumers eat plants, secondary consumers eat primary consumers, tertiary consumers eat secondary consumers, and so on.
Autotrophs are organisms that can make their own food from inorganic substances. They are also called producers. Autotrophs use photosynthesis or chemosynthesis to convert inorganic substances into organic molecules. Photosynthesis is the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen. Chemosynthesis is the process by which bacteria use chemical energy to convert inorganic substances into organic molecules.
Saprophytes are organisms that decompose dead organisms and organic matter. They are also called decomposers. Saprophytes break down dead organisms and organic matter into simpler substances that can be used by other organisms.
Xerophytes are plants that are adapted to living in dry environments. They have a number of adaptations that help them to conserve water, such as thick, waxy leaves and deep roots.
I hope this helps!