The correct answers that describe the lifestyle of the earliest humans such as Homo habilis are:
- They made use of tools and weapons.
- They lived in groups of 10–12 adults and their children.
- They hunted animals and probably scavenged food left by other predators.
Homo habilis is known for being one of the first hominins to make and use tools, they lived in small social groups, and they were likely both hunters and scavengers. The statement about settling in one area and raising crops is more associated with later agricultural societies, and while early humans may have spent some time in trees, they were primarily terrestrial.