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uniform-cost search expands the node n with the __________

(a) Lowest path cost

(b) Heuristic cost

(c) Highest path cost

(d) Average path cost

I got this question during a job interview.

My query is from Uninformed Search and Exploration topic in chapter Problem Solving of Artificial Intelligence

Select the correct answer from above options

Interview Questions and Answers, Database Interview Questions and Answers for Freshers and Experience

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Right answer is (a) Lowest path cost

The explanation: Uniform-cost search expands the node n with the lowest path cost. Note that if all step costs are equal, this is identical to breadth-first search.

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