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.

in ray bradbury's short story "a sound of thunder", mr. eckels's fearfulness leads to drastic consequences for the rest of the world.

in the story, mr. eckels, who is a hunter, hires a time travel company to travel to the age of dinosaurs. although he is excited for the hunting expedition at the beginning, when they reach there and mr. eckels sees the tyrannosaurus, he feels frightened. as he is afraid of the tyrannosaurus, he steps off the path although he has been warned not to do it. by stepping off the path, the entire course of the future is affected: mr. eckart alters the future by stepping on a butterfly, which causes a new man to be elected president in the future. in that way, it is mr. eckart's fearfulness what triggers 'the butterfly effect' and what leads to drastic consequences for the rest of the world.

a constant variable, normally called a controlled variable, is the term for a variable that remains constant throughout an experiment, though other variables may change. an example is the water pressure for a faucet when measuring the amount of water released when the faucet is opened to various increments.