The correct answer is: a) Goats and sheep.
Goats and sheep were domesticated in the Neolithic period, which began about 10,000 years ago. They were important animals for the people of the Punjab because they provided milk, meat, and wool. Goats and sheep are also relatively easy to care for, which made them a good choice for early farmers.
Horses and camels were domesticated later, in the Bronze Age. They were not as important for the people of the Punjab as goats and sheep, because they were not as well-suited to the climate of the region. Dogs and cats were also domesticated in the Neolithic period, but they were not as important for the people of the Punjab as goats and sheep. Dogs were used for hunting and protection, while cats were used to control rodents.
The domestication of animals was a major turning point in human history. It allowed people to produce more food, which led to a population increase. It also allowed people to travel further and trade with other groups. The domestication of animals also had a major impact on the environment. It led to the extinction of some species and the spread of others.