As per preamble of the Indian Evidence Act, 1872, the purpose of this Act is:-

to provide, define and amend the law of evidence
to provide, consolidate the law of evidence
to define and amend the law of evidence
to consolidate, define and amend the law of evidence

The correct answer is (b).

The Indian Evidence Act, 1872 is a law that provides for the rules of evidence to be followed in Indian courts. It was enacted by the British Parliament and came into force on 1st September 1872. The Act is divided into 16 chapters and 123 sections.

The preamble of the Act states that its purpose is to “provide for the better administration of justice by defining and amending the law of evidence”. This means that the Act aims to provide a clear and concise set of rules that can be used by courts to determine the admissibility of evidence in civil and criminal cases.

The Act does not define the term “evidence”. However, it does provide a list of things that can be considered evidence, such as oral testimony, documents, and objects. The Act also sets out rules for how evidence can be obtained and presented in court.

The Indian Evidence Act is a comprehensive and important piece of legislation that has had a significant impact on the administration of justice in India. It is a valuable resource for lawyers, judges, and other legal professionals.

The other options are incorrect because they do not accurately reflect the purpose of the Indian Evidence Act. Option (a) is incorrect because the Act does not provide for the amendment of the law of evidence. Option (c) is incorrect because the Act does not define the law of evidence. Option (d) is incorrect because the Act does not consolidate the law of evidence.