Q. Which of the following Upanishads is composed in prose form? Answer:
Brihadaranyaka Upanishad
Notes: The Brihadaranyaka Upanishad is one of the oldest Upanishads and is estimated to have been composed about 700 BCE. It is written in prose and forms part of the Shatapatha Brahmana of the Yajur Veda. It is considered as a source of philosophical doctrines, metaphorical speculative thoughts and mystical symbolism in Hinduism.