Final answer:
The evolution of specialized tissues greatly enhances animal function and complexity, leading to improved efficiency in survival tactics, adaptability, and reproductive success.
Step-by-step explanation:
The evolution of specialized tissues is critical for animal function and complexity because they contribute to greater functional diversity and efficiency within organisms. Specialized tissues enhance an animal's ability to interact with and adapt to its environment, leading to improved reproductive success and increasing the organism's chances of survival. For example, the development of a circulatory system allows for efficient transport of nutrients and waste, and muscle and nerve tissues enable rapid movement and response to environmental stimuli. Collectively, these specialized tissues have supported the evolution of a diverse and complex array of animals by optimizing the functions needed for survival.