18. Who is eligible to become a elevated as a pure devotee?

a) One who is faithful and firmly convinced of rendering devotional service to Krishna.
b) One who is faithful and firmly convinced of speculative processes to attain knowledge.
c) One who is faithful and firmly convinced of ritualistic and sacrificial performances.
d) One who is faithful and firmly convinced of regulative duties.

The correct answer is
a) One who is faithful and firmly convinced of rendering devotional service to Krishna.