Explanation:

3rd option is incorrect i.e. Surya sen- Lahore conspiracy case.
The political parties boycotted the Simon commission and this was followed by a wave of demonstrations all over India. In Lahore, Lala Lajpat Rai was leading an anti-Simon Commission demonstration on 30 October 1928, when the brutal Lathicharge claimed his life.
The death of Lala Lajpat Rai led the HSRA again take the path of assassination of the British.
The death of Lala Lajpat Rai led the HSRA again take the path of assassination of the British. To avenge the killing of Lal Lajpat Rai, Bhagat Singh, Raj guru, Jai Gopal and Sukh Dev conspired to kill the police chief, Scott. But they shot on the DSP – J. P. Saunders, who was killed on the spot. Bhagat Singh immediately fled from Lahore and to avoid recognition, he cut his beard and hair. Later he was trailed in this Lahore Conspiracy Case when he was captured after throwing bomb in Delhi Assembly.