What is the primary purpose of using scientific reasoning in a final engineering proposal?

To list the project's budget and timeline.

To defend design choices with objective evidence.

To share the team's personal satisfaction with the result.

To create a marketing brochure for the final product.

Which statement best demonstrates the use of quantitative evidence in an engineering justification?

The new alloy is significantly stronger than the old one.

Our tests showed the new alloy withstands 150% more force before deforming.

We feel confident that the new alloy is the best choice for this application.

The new alloy is a high-tech material that will improve the product's quality.

An informal survey showed that potential customers liked the design concept.

Test results show the internal temperature dropped only 5°C over 2 hours.

The container feels very sturdy and well-built compared to competitors.

The container is aesthetically pleasing and comes in multiple colors.

They will approve it based on the engineer's reputation.

They will reject it for lacking sufficient proof.

They will ask for a more colorful presentation.

They will assume the data is confidential and approve it.

Product color and product weight.

Manufacturing speed and material availability.

Increased performance and higher project cost.

Ease of use and the product's final appearance.