Which line from the passage best shows that Penelope is clever?

The lines from the passage that best show that Penelope is clever are the following:

Penelope does not want to marry any of the suitors. She is buying time by spinning and unspinning her burial shroud.

Reached their hearts that way, and they agreed.

So every day I wove on the great loom, but every night by torchlight I unwove it;