Choose the correct meaning of the idiom: **A bolt from the blue**.

Options:

• A: A sudden and unexpected event
• B: A heavy thunderstorm
• C: A beautiful clear sky
• D: A signal for danger

Related Practice Questions:

• If x - y = 5 and xy = 14, find the value of x³ - y³.
• If x + y = 12 and xy = 27, find the value of x³ + y³.
• If x² + 1/x² = 79, find the value of x + 1/x (positive value).
• If x² + 1/x² = 47, find the value of x + 1/x (positive value).