The term ___________ is used for a depth-first search that chooses values for one variable at a time and returns when a variable has no legal values left to assign.
(a) Forward search
(b) Backtrack search
(c) Hill algorithm
(d) Reverse-Down-Hill search
This question was posed to me in an interview for internship.
Asked question is from Constraints Satisfaction Problems topic in division Problem Solving of Artificial Intelligence
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