What does the underlined word mean? It was a stroke of luck that I found you here.
A.
stroke (of sth): a single successful action or event
B.
stroke: a sudden serious illness when a blood vessel in the brain bursts or is blocked, which can cause death or the loss of the ability to move or to speak clearly
C.
stroke: a mark made by moving a pen, brush, etc. once across a surface
D.
stroke: a style of swimming