Which item describes one of the key functions to be included in a design brief?

Which item describes one of the key functions to be included in a design brief?

• A. Description of the key functions
• B. Production cost estimation
• C. Marketing plan
• D. None

Answer: (A)

The essential thing a design brief should include is a clear description of what the product must do—the key functions. Stating the functions defines the product’s purpose and sets the performance criteria designers must meet, guiding choices about features, materials, dimensions, usability, and safety. It also gives a concrete benchmark to judge whether a solution fits the brief. While production cost estimation and a marketing plan are important parts of broader project planning, they belong in later stages or separate documents rather than defining the product’s primary duties.

The essential thing a design brief should include is a clear description of what the product must do—the key functions. Stating the functions defines the product’s purpose and sets the performance criteria designers must meet, guiding choices about features, materials, dimensions, usability, and safety. It also gives a concrete benchmark to judge whether a solution fits the brief. While production cost estimation and a marketing plan are important parts of broader project planning, they belong in later stages or separate documents rather than defining the product’s primary duties.