She sat up all -----the night nursing her mother. What will be the preposition is it during,through,from or after???

It could be either during or through, although I'd prefer through.

To determine the correct preposition in the given sentence, we need to understand the relationship between "she" and "the night nursing her mother".

The phrase "sat up all the night nursing her mother" tells us that she stayed awake the entire night to take care of her mother. In this context, the preposition required should indicate the duration or time frame during which she stayed awake.

The most appropriate preposition in this case is "through" because it expresses the idea of going from the beginning to the end of a period of time without interruption. Therefore, the correct sentence would be:

"She sat up all through the night nursing her mother."

By understanding the meaning of the sentence and the specific usage of the prepositions, we can determine the correct answer.