Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful and coherent paragraph.

A. The top band is made of saffron, which symbolises power and courage.

B. The constituent assembly adopted our national flag, Tiranga, which means tricolour, on 22nd July 1947.

C. As a symbol of nationalism and freedom, it is fashioned from khadi, which is domestically spun Indian cotton.

D. It features three horizontal stripes that are all the same width.

To arrange the sentences in the correct logical order, let us analyze the connections and flow of information between them:

1. Sentence B serves as the ideal opening sentence. It introduces the main subject of the paragraph: the adoption of our national flag, "Tiranga" (meaning tricolour), by the constituent assembly on 22nd July 1947.
2. Sentence C logically follows Sentence B. The pronoun "it" in C refers back to the national flag (Tiranga) introduced in B. It adds historical and symbolic context by stating that as a symbol of nationalism and freedom, it is made from domestically spun Indian cotton (khadi).
3. Sentence D then continues describing the physical appearance and structure of the flag introduced in B and C, stating that "It features three horizontal stripes that are all the same width."
4. Sentence A naturally follows D to elaborate on the details of these horizontal stripes. It explains the significance of the first stripe: "The top band is made of saffron, which symbolises power and courage."

Combining these observations, the correct logical sequence of the sentences is B-C-D-A.

Therefore, the correct option is BCDA.