Questions 26 to 30 are based on the following Text 4.

Text 4

Redfeathers the Hen

    Redfeathers, the hen, was so-called because all her feathers were red. One day, the fox caught sight of her in the farmyard and his mouth began to water.

    He ran home and told his wife to put on water for boiling a chicken, and then he rushed back, and before Redfeathers knew what was happening, she found herself snapped up and inside a sack, not even able to call for help.

    Luckily for her, her friend the dove saw what had happened. She fluttered on the path in the woods, and lay there, pretending to have a broken wing. The fox was delighted to find that he now had a first course as well as a main dish. He put down the sack with the hen in it, and chased off after the dove, who began cleverly to hop futher and futher away.

    Redfeathers slipped out of the sack and put a stone in her place, then she too ran off. When the dove saw that her friend was safe, she flew up into a tree. The fox then went back and picked up the sack, thinking that the hen was still in it. When he got home, the fox tipped the sack into the pot of boiling water, but the stone splashed it all over him, and he burned his greedy paws.

Source: 366 and More Fairy Tales, 1990

What did Redfeathers do to trick the fox?