Answer:
fitness for particular purpose
Step-by-step explanation:
Shannon can sue Jack for selling the lumber which is of poor quality. Shannon approach Jack’s Lumber to purchase lumber and the building materials to build a play house at the backyard.
On selling the lumber to Shannon, Jack states that the material will serve Shannon's purpose. But later the structure collapses because it could not take the weight of the children. The materials that Jack provided did not serve the purpose as it was not fit for building a play structure. Thus Shannon can sue Jack for breaching.
Hence the answer is -
"fitness for particular purpose ".