Answer:
In Susan Sandren's case, the correct demand development will be:
d. Susan's family will win because of a design defect.
Step-by-step explanation:
The case is a little bit complicated but the correct development is the next: the industry has an "error range" named manufacturing tolerance, which allows that a product be sold with a difference in measurements or technical characteristics between 5 or 10% depending of the industry or type of product but, when that error range put a life in danger or remove a life, the fault owns the industry, because in the case of the product would have the correct measurement, that would not occur.