The major product formed in the following reaction is

Concept: -

Electrophilic ring substitution reaction:

• Benzene and other aromatic compounds show characteristic electrophilic substitution reactions.
• In this reaction, a hydrogen atom of the aromatic ring is substituted by an electrophile.
• The substitution takes place through an addition-elimination mechanism.
• In the first step, the benzene ring donates pi electrons to the electrophile.
• One of the carbon atoms forms a bond with the electrophile.
• In the second step, the complex formed then loses a proton from the saturated carbon atom with the help of a base.
• The aromatic ring is finally regenerated in the last step.

Nitration:​

• Nitric acid and sulfuric acid used in nitration generate nitronium NO2+ ions as electrophiles.
• Nitronium NO2+ is the nitrating agent.
• The electrophile then attacks the benzene ring forming a sigma complex.
• The σ complex is resonance stabilized.
• The complex then loses a proton to form nitrobenzene.
• Effect of halogen on Nitration of benzene ring: 
  • Halogens show the +R effect as follows

As we can see from the resonance hybrids, the ortho and para position is activated.

Thus, halogens are ortho-para directing.

​​Explanation:

As Discussed halogens are ortho para directing, So the reaction will proceed as follows:

Step 1: - Production of electrophile

The nitronium ion will behave as an electrophile.

Step 2: - Attack of electrophile.

The resonance will activate the ortho-para position.

Thus, on the attack following products will form:

Conclusion:- 

Hence,

The correct option is (1).