Step 1: Understanding Pramanas.
In Indian philosophy, Pramanas are the means of obtaining valid knowledge. Different schools of philosophy accept different numbers of Pramanas.
Step 2: Charvak Philosophy overview.
Charvak (also called Lokayata) is a materialist school of Indian philosophy. It emphasizes direct perception and denies the validity of inference and testimony.
Step 3: Accepted Pramana in Charvak.
Charvak accepts only "Pratyaksha" (direct perception) as the valid source of knowledge. Inference, testimony, and other means are rejected.
Step 4: Analysis of options.
- Option (1) 3: Accepted in Nyaya philosophy, not in Charvak.
- Option (2) 2: Mimamsa accepts two, not Charvak.
- Option (3) 1: Correct, only perception (Pratyaksha) is accepted.
- Option (4) 4: Vedanta schools sometimes accept four or more.
Step 5: Conclusion.
Thus, Charvak accepts only one Pramana: Pratyaksha (perception).