Answer: Option A
:
A
Sum up the last line of the first paragraph “This seems especially true of the language of the contemporary school of literary criticism that now prefers to describe its work simply and rather presumptuously as theory but is still popularly referred to as poststructuralism of deconstruction.”
And the last line of the last paragraph: “The deconstructionist, by implication, is both judge and executioner who leaves a text totally dismantled, if not reduced to a pile of rubble.”
Both these lines are summarized in answer (a).
Option (b) is very specific to second paragraph. Moreover we cannot have examples in the main theme.
Option (c) does not give any information or definition of deconstruction.
Option (d) does capture one half of the essence of the paragraph and not the other.
So the answer is option (a).