Nothing seemed very inspiring _____ then she heard a song called 'Simply the best'.

• A. And
• B. But
• C. Yet
• D. While

Answer: (A)

The idea here is how to link two actions in a sequence in a natural narrative. Using and before then shows a simple progression: nothing seemed inspiring, and then something changed when she heard a song. And is the neutral connector that adds the second event without implying a contrast or simultaneity.

Choosing the other options shifts the nuance. But or yet would introduce a contrast or turning point, which isn't the intended smooth progression in this sentence. While would imply the actions happen at the same time, which doesn’t fit the idea of one event following another.