A new system for monitoring vital functions of patients is to be developed. The system is to be

used in intensive care. The usability of the system is especially critical, primarily because the
nursing staff must correctly interpret the information indicated by the system and do sounder great
time pressure.
Which two techniques are best suited to identifying the user requirements?

A.
Questionnaires / interviews

B.
Apprenticing

C.
Field surveys

D.
Role playing

E.
Brainstorming

Explanation: