Which of the Following Examples Is Not an Example of Research

Which of the following examples is not an example of research activities?

A) The search for alternative materials,devices,products,processes,systems,or services.
B) Activities aimed at obtaining new knowledge.
C) The design,construction,and testing of pre-production or pre-use prototypes and models.
D) The formulation,design,evaluation,and final selection of possible alternatives for new or improved materials,devices,products,processes,systems,or services.