A company is building an expert system for use in stock trading. In which part will they have to invest the most if they have to a very extensive amount of data to store? A) Interface engine
B) reasoning engin
C) knowledge base
D) user Interface

If an improvement creates no significant change in a product’s performance, then it is a(n) ? a0 design improvement. (there are no answer choices)

Alex’s family members live in different parts of the world. they would like to discuss the wedding plans of one of their distant relatives. however, alex wants all the family members to talk to each other simultaneously so that they can make decisions quickly. which mode of internet communication should they use? a. blog b. email c. wiki d. message board e. instant messaging

Facial expressions and gestures are examples of messages.