Lymphogranuloma venereum is caused by serovars of

Neisseria gonorrhoeae.

Chlamydia trachomatis.

Treponema pallidum.

Haemophilis ducreyi.

Chlamydia trachomatis.

Explanation:

Lymphogranuloma venereum is one of the sexually transmitted disease in which the lymph nodes of the affected individual get swollen. This disease was first discovered by Wallace.

Lymphogranuloma venereum caused by the serovars of Chlamydia trachomatis. This organism can easily enter from the broken skin in the body of the individual.

Thus, the correct answer is option (2).