Knowledge spillover refers to:

a$.$

an informal exchange of ideas among individuals that helps individuals understand the state of the art in their field.

b$.$

financially and technologically unfeasible ideas generated in the innovation hubs.

c$.$

the gradual dissemination of ideas that is generated in one part of the organizational structure, to different parts of the organization.

d$.$

illegal accessing of confidential company information by rival organizations as a part of industrial espionage.

e$.$

the irrelevant business information that is accumulated in the organizations in the course of gathering business intelligence from the market.