Final answer:
During the complex civilization period, the primary methods of finding food were hunting and farming, while common occupations included craftsmanship and artisan work. Settlement locations were chosen for their geographical advantages, with strategic locations being critical for access to resources and trade.
Step-by-step explanation:
During the complex civilization period, the methods by which people found food and engaged in occupations were markedly different from earlier times. In these civilizations, agriculture was a fundamental aspect, as it allowed food surplus to be produced. This, in turn, led to population growth and the development of larger cities. As cities grew, people specialized in certain trades and occupations, with farming, writing, craftsmanship, and performing religious rituals as examples. The location of settlements was often strategically chosen for agricultural potential, access to water, and trade routes, thus geographical advantages played an important role in where people lived.
Based on the provided references, options A, B, C, and D each have elements that were present in complex civilizations. However, based on early civilizations' practices, the option that seems to best represent the common ways of finding food, the common occupations, and the reasons for people settling in certain locations is option A: Hunting, farming, strategic location. Hunting, where applicable, alongside farming, were core ways to produce food in early civilizations.
As civilizations developed, specialized occupations emerged, such as craftsmanship and artisan work, and people began producing goods like fabrics, pottery, and tools. Trade also became a critical part of these societies, not just for goods but for materials and ideas. Settlements often arose in locations that offered strategic advantages like access to fresh water, fertile land for agriculture, and protection.