a. A part of the Constitution but has no legal effect

b. Not a part of the Constitution and has no legal effect either

c. A part of the Constitution and has the same legal effect as any other part

d. A part of the Constitution but has no legal effect independently of other parts

Answer:  d 

Explanation:

The Supreme Court of India has laid down in some cases that the Preamble is not an operative part of the Constitution and hence it can never be a source of power. It has limited application and can be resorted to where there is any ambiguity or where the object or meaning of any enactment is not clean.

The Supreme Court in the Kesavananda Bharti case held that the Preamble was a part of the Indian Constitution.

Hence, option d is correct.

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