A team develops a waterproof backpack with the goal of keeping contents dry in a rainstorm. What is the most crucial piece of evidence for their design justification?

The total cost of the backpack.

The stylish appearance of the zippers.

A list of all the materials that were considered but not used in the final design.

An engineering team is tasked with creating an affordable, easy-to-assemble bookshelf. Which of the following is an essential part of their design justification?

The designer's favorite color was used for the final product.

Data on assembly time and total material cost.

A comparison of the bookshelf to a much more expensive one.

A statement that the bookshelf is "very sturdy and useful."

The justification is used to create the initial project goals.

The justification proves the project goals were met.

Project goals are only important if the design fails.

The justification focuses on features not related to the goals.

A list of project team members.

The marketing plan for the product.

To offer a personal opinion on the product's appearance.

To create a marketing slogan for the new product.

To provide a detailed list of all materials used in the construction of the product.

To use evidence from testing to explain how a design successfully meets its original goals.