a) Strong Artificial Intelligence
b) Weak Artificial Intelligence
c) Applied Artificial Intelligence
d) All of the mentioned

Answer: d
Explanation: Strong Artificial Intelligence aims to build machines that can truly reason and solve problems. Weak Artificial Intelligence deals with the creation of some form of computer-based artificial intelligence that cannot truly reason and solve problems, but can act as if it were intelligent. Applied Artificial Intelligence aims to produce commercially viable “smart” systems. In the Cognitive Artificial Intelligence approach, a computer is used to test theories about how the human mind works.