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. My grandmother always went to school with me because the school was attached to the temple.

B. When we both finished, we would be back together.

C. While the children sat in rows on either side of the verandah singing the alphabet or prayer in chorus, my grandmother sat inside reading the scriptures.

D. The priest taught us the alphabet and the morning prayer.

To arrange the jumbled sentences into a meaningful and coherent paragraph, let us analyze the logical flow and connections between the sentences:

1. Sentence A introduces the main setting and the relationship between the narrator, the grandmother, and the school: "My grandmother always went to school with me because the school was attached to the temple." This serves as a perfect opening sentence by setting the context.
2. Sentence D naturally follows Sentence A by introducing the school's environment and what happens once they arrive there: "The priest taught us the alphabet and the morning prayer." This details the beginning of the school routine.
3. Sentence C elaborates on the activities of both the narrator (with the other children) and the grandmother during the school session: "While the children sat in rows on either side of the verandah singing the alphabet or prayer in chorus, my grandmother sat inside reading the scriptures." This provides a parallel description of their activities while school is in session.
4. Sentence B concludes the sequence by describing what happens when their respective activities are completed: "When we both finished, we would be back together." This refers back to the completion of the activities mentioned in Sentence C ("finished") and links back to the grandmother and the narrator ("we both").

Combining these steps, the correct logical order of the sentences is A → D → C → B.

Therefore, the correct option is ADCB.