Explanation:

- e-NAM (National Agriculture Market) is a pan-India electronic trading portal that links existing APMC mandis.

- The platform allows trading in various commodities such as fruits, vegetables, cereals (like wheat, rice), pulses (like lentils, chickpeas), and more.

- However, cereals are usually the most commonly traded commodities on e-NAM due to their high production, easy storage, and major market demand in India.

- Fruits and vegetables are also traded, but their share is lower due to perishability and logistics challenges.

- Pulses have significant volume, but still less than cereals.

- So, the correct answer is:

Option 3: Cereals