Final answer:
The requirement for life that entails 'metabolism and energy processing' involves metabolic activities that are crucial for energy transfer, supporting the growth and maintenance of living organisms.
Step-by-step explanation:
The requirement for life that best matches with the description of 'metabolism and energy processing' is the need for energy to carry out life processes. This encompasses creating and using energy through various metabolic activities, vital for the survival of cells and organisms. Metabolism includes both anabolic and catabolic reactions that transfer energy necessary for growth, reproduction, and maintaining homeostasis.