Unconditio al reflexes and instincts are aimed at: preserve species; change species; individual adaptation; individual development.

The correct answer is: preserve species.<br /><br />Unconditional reflexes and instincts are innate behaviors that are present in an organism from birth and are not learned or modified through experience. These behaviors are typically aimed at preserving the species, as they are essential for survival and reproduction. For example, reflexes such as the rooting reflex in infants help them find food, while instincts such as migration in birds help them find suitable habitats for breeding and feeding. These behaviors are not aimed at changing the species, individual adaptation, or individual development, but rather at ensuring the survival and continuation of the species as a whole.