Correct answer: (b) It is not enforceable
Explanation
- A
It is enforceable
(a) It is enforceable. Courts do not issue a writ to enforce the Preamble as if it were a fundamental right or a statute.
- B
It is not enforceable
(b) It is not enforceable. The Preamble is a part of the Constitution (Kesavananda) and an aid to interpretation, but it creates no independently justiciable right. (b) Official key.
- C
It may be enforced in special circumstances
(c) It may be enforced in special circumstances. There is no special-circumstance writ of the Preamble; enforcement still runs through Parts III, IV and the amending power.
- D
None of the above
(d) None of the above. The legal nature is settled: useful, non-justiciable as a stand-alone command—so (b) already names it.
Summary. Official key is (b). The Preamble is not enforceable in a court as a free-standing right. It remains a key to meaning and, after Kesavananda, part of the Constitution, including the basic-structure idea of its ideals.