Q. Consider the following:
  1. Fire worship
  2. Tree worship
  3. Yaksha worship
  4. Animal worship
Which among the above is / are pre-vedic phenomena?

Answer: 1, 2, 3 & 4
Notes: Fire worship, tree worship, Yaksha worship, and animal worship are all considered to be pre-Vedic phenomena in Indian history and religion. These forms of worship were practiced in ancient India long before the composition of the Vedas, which are considered to be the earliest Hindu scriptures.