The traditional livelihood of many tribal communities in Kerala is:

Agriculture
Fishing
Forest-based activities
Industrial labor Answer: c

The traditional livelihood of many tribal communities in Kerala is forest-based activities. This includes activities such as hunting, gathering, and shifting cultivation. Forests provide these communities with a variety of resources, including food, medicine, and building materials. They also play an important role in the spiritual and cultural lives of these communities.

Agriculture is another important livelihood for many tribal communities in Kerala. However, this has been declining in recent years due to deforestation and other factors. Fishing is also a significant source of income for some tribal communities. However, this is also a declining livelihood due to overfishing and other environmental problems.

Industrial labor is a relatively new livelihood for tribal communities in Kerala. This has been due to the growth of industries in the state in recent years. However, this is a relatively small number of tribal people who are employed in industries.

In conclusion, the traditional livelihood of many tribal communities in Kerala is forest-based activities. This includes activities such as hunting, gathering, and shifting cultivation. Forests provide these communities with a variety of resources, including food, medicine, and building materials. They also play an important role in the spiritual and cultural lives of these communities.