An interactive computer-based information system that facilitates the efforts of several people working together in solving complex and unstructured problems is a:

A) collective support system.
B) group decision support system.
C) problem-solving system.
D) communal information system.
E) brainstorming support system.

Group Decision Support System

A computer-based system designed to aid groups in making decisions, improving the efficiency and effectiveness of team decision-making processes.

Interactive

Characterized by reciprocal action or influence, allowing for communication or exchange between people or systems.

Unstructured Problems

Challenges or questions that do not have an easy or straightforward solution, often requiring unique or creative approaches.