. . . . . . . . Punjab is . . . . . . . . land of India.

Let's break down why the correct answer is Option D: no article, the.

Part 1: "Punjab is..."
The word "Punjab" is the name of a specific place (a state in India).
We generally do not use an article (a, an, or the) before proper nouns like names of countries, states, or cities.
So, the first blank should have "no article".

Part 2: "...land of India."
Here, we are talking about a specific land or a very well-known geographical or historical concept.
Specifically, considering the context, it is very well known that Punjab is a fertile land. Also the name "land of India" is generally used for a well-known reason. Therefore, we use "the" before nouns when we are referring to a specific or unique thing.
So, "the" is the correct article for the second blank.

Therefore, the complete and correct sentence is: Punjab is the land of India.