The correct answer is B. BACON.
BACON is a series of AI systems developed by Pat Langley to explore the role of heuristics in scientific discovery. It is based on the idea that scientific discovery can be modeled as a search process, and that heuristics can be used to guide the search process. BACON has been used to discover laws in a variety of domains, including physics, chemistry, and biology.
RAMD is a rule-based expert system developed by Edward Feigenbaum and his colleagues at Stanford University. It is designed to diagnose faults in complex systems, such as electronic circuits. RAMD uses a set of rules to represent the knowledge of a human expert, and it uses a search algorithm to find a diagnosis that is consistent with the rules.
MIT is a computer program developed by Marvin Minsky and Seymour Papert at MIT. It is designed to learn to play the game of Tic-Tac-Toe. MIT uses a heuristic search algorithm to find the best move to play.
DU is a computer program developed by Allen Newell and Herbert Simon at Carnegie Mellon University. It is designed to solve problems in the domain of logic. DU uses a heuristic search algorithm to find a solution to a problem.
None of the above is a series of AI systems developed by Pat Langley to explore the role of heuristics in scientific discovery.