Today's global economy and communications link all contemporary people, directly or indirectly, in the modern world system. people must now cope with forces generated by progressively larger systems—the region, the nation, and the world. for anthropologists studying contemporary forms of adaptation, why might this be a challenge? a. anthropological research tools do not work in this new modern world system, making their contributions less valuable. b. according to marcus and fischer (1986), "the cultures of world peoples need to be constantly rediscovered as these people reinvent them in changing historical circumstances."c. a more dynamic world system, with greater and faster movements of people across space, speeds up the process of evolution, making the study of genetic adaptations more difficult. d. truly isolated indigenous communities, anthropology's traditional and ongoing study focus, are becoming harder to find. e. since cultures are tied to place, people moving around and connecting across space means the end of culture, and thus the end of anthropology.

b. According to Marcus and Fischer (1986), "The cultures of world peoples need to be constantly rediscovered as these people reinvent them in changing historical circumstances.

Explanation:

Anthropology  represents the scientific study both of the past and present of societies and human behavior specifically to understand and identify patterns.

Since, the global economy and communication links continues to link all contemporary people, they continue to change as they are constantly influenced by what they are exposed to daily. Unlike previous times when a person's patterns and evolution were typically decided by his immediate environment, now globalization brings human influences from across the globe.

The anthropologist in his study therefore, must understand the complexities of diverse  cultures and systems and how they come to play in constantly shifting the cultures of the people and constantly creating new behavioural patterns. This becomes an on-going discussion.

i mean, there is a lot of homeless people. but it is a very busy place and always in need for people who can be busy so it's not impossible to find one.