Which adage best describes the paragraph?

for years, bethany wanted to tour the inside of the lighthouse near her aunt’s home. but every time she tried to go, the building was either closed or it was too windy and cold to walk through the dunes to the lighthouse. shortly before her aunt sold her house and was to move away, bethany went for a visit. her aunt told her this would be her last chance to tour the lighthouse. bethany said, “let’s do it.”

a.
if you don’t like the heat, get out of the kitchen.

b.
the grass is always greener on the other side.

c.
strike while the iron is hot.

d.
save it for a rainy day.