Option 1, Bharat Electronics Limited: Bharat Electronics Limited (BEL) is a government-owned company involved in the manufacture of a wide range of electronics products. However, there is no evidence or information available to suggest that BEL is engaged in the upgradation of the Swedish 155-mm Bofors Howitzer under the project ‘Dhanush’. Therefore, option 1 is incorrect.

Option 2, Ordnance Factory Board: The correct answer to the question is option 2. The Ordnance Factory Board (OFB) is a government organization that manufactures and provides ammunition, weapons, and other military equipment to the Indian Armed Forces. They are engaged in the upgradation of the Swedish 155-mm Bofors Howitzer under the project ‘Dhanush’.

Option 3, Bharat Dynamics Limited: Bharat Dynamics Limited (BDL) is a public sector company involved in the manufacture of ammunition and missile systems for defense purposes. However, there is no evidence or information available to suggest that BDL is engaged in the upgradation of the Swedish 155-mm Bofors Howitzer under the project ‘Dhanush’. Therefore, option 3 is incorrect.

Option 4, Mishra Dhatu Nigam: Mishra D