Answer:
C) All living things adapt to changes in their environment.
Explanation:
Resistant bacterial cells demonstrate the characteristic of life known as adaptation to changes in their environment. Bacteria have the ability to adapt to various environmental conditions, including exposure to antibiotics, which leads to the development of resistance. This adaptive response allows bacteria to survive and thrive in different environments, showcasing their ability to evolve and respond to challenges posed by changes in their surroundings. Therefore, the presence of resistant bacterial cells exemplifies the broader concept of adaptation observed across living organisms.