The correct answer is: d) All of the above
Upper Paleolithic sites in Andhra Pradesh have yielded evidence of the development of blade tools, specialized hunting techniques, and increased use of shelters.
Blade tools are a type of stone tool that is made by flaking a long, thin blade from a larger piece of stone. Blade tools are often very sharp and can be used for a variety of tasks, such as cutting, scraping, and piercing.
Specialized hunting techniques are methods of hunting that are designed to take advantage of the specific characteristics of the prey animal. For example, some specialized hunting techniques involve using traps or nets, while others involve using weapons such as spears or bows and arrows.
Increased use of shelters is a trend that is observed in many Upper Paleolithic sites. This trend is likely due to a number of factors, such as the increasing cold temperatures of the Late Pleistocene, the increasing availability of large game animals, and the increasing complexity of social organization.
In conclusion, Upper Paleolithic sites in Andhra Pradesh suggest the development of blade tools, specialized hunting techniques, and increased use of shelters. These findings provide valuable insights into the lives of early humans in this region.