Select the most appropriate option to fill in blank

In the following passage some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each number. Hunter-gatherer culture was the way of life for early humans until around 11,000 to 12,000 years ago. The lifestyle of hunter-gatherers was (1) ______ on hunting animals and foraging for food. Anthropologists (2)______ discovered evidence for the practice of hunter-gatherer culture (3)______ modern humans (Homo sapiens) and their distant ancestors dating as (4)______ back as two million years ago. Before the (5)______ of hunter-gatherer culture, earlier groups relied on (6)______practice of scavenging animal remains that predators left (7)______. Because hunter-gatherers did not rely on agriculture, (8)______ used mobility as a survival strategy. Indeed, (9)______ lifestyle required access to large areas of (10)______ to find the food they needed for survival.