Answer:
Option (1), (2) and (3) are correct
Step-by-step explanation:
Early humans were the first to discover the use of fire. It was helpful to them because it protected them from other animals, to keep themselves warm in the colder environment. With increasing time, they were able to cook food using fire.
These early humans used to live in the caves and in the cliffs in order to take shelter. They lived a nomadic life as they had to go for hunting, in order to obtain food for them and their family.
Thus, the correct answers are Option (1), (2) and (3).