The correct answer is b) ability to move.
While all living things share several key characteristics, such as responding to their environment, growth and development, and the ability to reproduce, the capacity for movement is not universal among all organisms. For instance, plants and many microorganisms do not move from one place to another in the same way animals do; instead, they may react to stimuli or undergo growth in response to their surroundings. Thus, while movement is a characteristic of many animals, it is not essential to all forms of life.