Srimad Bhagavatam: Canto 07, Chapter 07 – What Prahlada Learned in the Womb

08. To be disentangled from material life,

a)    One must accept a spiritual master and render service unto him with great devotion and faith
b)    In association of saintly persons one should worship the Lord
c)    Glorify the transcendental qualities and activities of the Lord 
d)    All the above