Growth and reproduction:
Living organisms have the ability to grow and reproduce, which are unique features that distinguish them from non-living things. Growth refers to an increase in size or number of cells, resulting in the overall increase in the size of an organism. Reproduction, on the other hand, involves the production of offspring, ensuring the continuation of the species. Both growth and reproduction are essential for the survival and perpetuation of living organisms.

Reproduction and ability to sense the environment:
Reproduction and the ability to sense the environment are also unique features of living organisms. Reproduction allows for the generation of new individuals, ensuring the survival of the species over time. It can occur through various mechanisms such as sexual and asexual reproduction.

The ability to sense the environment is crucial for living organisms to respond and adapt to changes in their surroundings. Organisms have evolved different sensory organs and systems to detect stimuli such as light, sound, temperature, chemicals, and touch. By sensing the environment, organisms can gather information about their surroundings, which helps them make appropriate responses, such as finding food, avoiding predators, or seeking mates.

Metabolism and interaction:
Metabolism refers to the sum of all chemical reactions that occur within an organism. It involves processes such as energy production, nutrient uptake, and waste elimination. Metabolic reactions allow living organisms to maintain their internal environment, obtain energy, and carry out essential physiological functions. Metabolism is a defining characteristic of living organisms.

Interaction is another unique feature of living organisms. Organisms interact with their environment and other organisms in various ways. They can form complex ecological relationships such as predation, symbiosis, and competition. Interactions with other organisms can influence the survival, behavior, and evolution of living organisms.

All of the above:
All the options mentioned (growth and reproduction, reproduction and ability to sense the environment, and metabolism and interaction) are unique features of living organisms. Each of these features plays a crucial role in the survival, adaptation, and perpetuation of living organisms. They collectively define what it means to be alive and distinguish living organisms from non-living things.