How does the concept of ignorance (Avidya) relate to the fear of birth and death, and what is the solution presented?

Chapter 37 explains that ignorance, or Avidya, is the fundamental root cause of the fear of worldly existence, which includes the cycle of birth and death. This ignorance establishes a perception of manifoldness and duality, making one see differences where there is unity. The text states that he who holds "even the slightest view of difference will fall into the sufferings of birth and death." Where there is an obsession with duality, fear inevitably enters. The solution prescribed is to acquire Vidya, or true knowledge, through the scriptures and the Guru. By removing ignorance, the perception of manifoldness disappears, causing the cycle of birth and death to cease. This science of oneness is the ultimate remedy.