The Sale of Goods Act, 1930 is a legislation in India that governs the sale of goods. It provides certain implied warranties that are applicable to every contract of sale, unless expressly excluded or modified by the parties involved. The implied warranties under the Sale of Goods Act include the following:

a) Enjoyment of undisturbed possession:
This warranty ensures that the buyer will have the right to possess and use the goods without any interference from the seller or any third party. It means that the buyer will not be disturbed in their possession or use of the goods, and if any interference occurs, the buyer has the right to seek remedies under the Act.

b) Disclosure of dangerous nature of goods:
The Act also implies a warranty that the seller must disclose any dangerous nature of the goods being sold. This includes goods that may pose a risk to the buyer's health, safety, or property. The seller is obligated to inform the buyer about any known dangers associated with the goods, and failure to do so can result in legal consequences.

c) Quality or fitness by usage of trade:
Another implied warranty under the Act is that the goods being sold are of satisfactory quality and reasonably fit for the purpose for which they are intended. This means that the goods should meet the standard of quality that a reasonable person would expect, considering factors such as their description, price, and intended use. If the goods do not meet this standard, the buyer has the right to reject them and seek remedies.

d) All of the above:
The correct answer is option 'D' - all of the above. This means that all the implied warranties mentioned above are included under the Sale of Goods Act, 1930. These warranties provide protection to buyers and ensure that they receive goods that are safe, of satisfactory quality, and suitable for their intended purpose.

In conclusion, the Sale of Goods Act, 1930 includes implied warranties such as the enjoyment of undisturbed possession, disclosure of dangerous nature of goods, and quality or fitness by usage of trade. These warranties aim to protect the rights and interests of buyers in the sale of goods.