(A) Interpolated in the prominent
mystic poet Kabir’s couplets is all practical teachings that are
Interpolated is a -ed verbal and modifies the couplets by Kabir. Kabir's couplet is not a poet. Illogical meaning.
(B) The prominent mystic
poet’s couplets of Kabir interpolate all practical teachings that are
The sentence is totally illogical.
(C) A prominent mystic
poet, Kabir’s couplets interpolate all practical teachings
Kabir is the poet. The placement of a modifier prior to Kabir's couplet, gives a nonsensical meaning to the sentence as it states that Kabir's couplet is a port.
(D) The couplets of Kabir, a prominent mystic poet, interpolate all practical teachingsThis is the correct option. The placement of an non essential modifier "a prominent mystic poet" gives extra information about Kabir.
Stripping this -
The couplets of Kabir,
a prominent mystic poet, interpolate all practical teachings laced with strong religious and social messages to teach people how to lead a content life.
The sentence is grammatically and logically correct.
(E) Kabir, a prominent mystic poet who interpolated in his couplets all practical teachings, is
Removing the non-essential information, the sentence becomes -
Kabir,
a prominent mystic poet who interpolated in his couplets all practical teachings, is laced with strong religious and social messages to teach people how to lead a content life.
Kabir is not laced with strong religious and social messages. The teachings of Kabir are infact laced with strong religious and social messages . Hence this incorrect.