The correct answer is option 'D', which is the Damodarpur copper plate. The Damodarpur copper plate inscription is an important inscription of the Gupta period that provides valuable information about the sale of land during that time.

The inscription is written in Sanskrit and is dated to the 5th century CE. It was discovered in Damodarpur, a village in the district of Bhagalpur, Bihar. The copper plate is inscribed with 15 lines of text, which provides details about the sale of land.

Here is a detailed explanation of the Damodarpur copper plate inscription:

1. Historical context: The Gupta period is considered a golden age in Indian history, known for its political stability, economic prosperity, and cultural achievements. The Gupta rulers were known for their administrative and legal reforms, and the Damodarpur copper plate inscription sheds light on one such aspect of their governance - the sale of land.

2. Content of the inscription: The inscription begins with an invocation to deities and then provides details about the transaction of land. It mentions the names of the parties involved in the sale, including the seller, the buyer, and the witnesses.

3. Description of the land: The inscription provides a detailed description of the land being sold, including its boundaries, area, and any structures or trees present on the land. This information was crucial for legal purposes and to avoid any disputes in the future.

4. Price and payment: The inscription also mentions the price at which the land was sold and the mode of payment. It states whether the payment was made in cash, kind, or a combination of both. This information gives us insights into the economic transactions and the value of land during the Gupta period.

5. Legal safeguards: The inscription also includes clauses related to legal safeguards. It mentions the penalties for any violations of the terms of the sale agreement and the consequences for disputing or challenging the ownership of the land. This indicates the existence of a legal framework and the importance given to property rights during that time.

Overall, the Damodarpur copper plate inscription is an important source of information regarding the sale of land during the Gupta period. It provides valuable insights into the economic and legal aspects of land transactions and gives us a glimpse into the administrative and legal reforms of the Gupta rulers.

Damodarpur copper plate inscription of the Gupta period gives details regarding the sale of land. Damodarpur (in Dinajpur District) Copper Plate No.1 of Kumargupta I (443–444AD) is probably the most important for a knowledge of local administrative pattern andis the most popular source for historians. It refers to Visayapati Kumaramatya Vetravarman, who was appointed by (Tanniyukta) the Uparika Cirata Dutta, Governor of Pundravardhana Bhukti. Vetravarman being in-charge of Kotivarsa Visaya (dist.) administered the government of the locality in the Administrative Board in company of Dhrtipala, the Nagaraśresthi, Bandhu Mitra, the Sarthavaha, Dhrtimitra – the Prathamakulika and Śambapala – the Prathama Kayastha. They were seen to come together and consult on the sales of land.