Bisect Question Explained
This worked Git Fundamentals practice question tests Debugging. Try the answer first, then review why A is the best choice.
Short answer
The correct answer is A. git bisect.
git bisect performs a binary search through history. You mark commits good or bad, and Git narrows down the first commit that introduced the problem. The key is to match the exact action in the prompt to the tool, command, or concept that performs that action directly. Here, A. git bisect is the only option that satisfies the scenario without adding unrelated behavior.
The Question
A regression appeared sometime in the last 30 commits. Which Git tool helps find the first bad commit?
Why A is correct
git bisect performs a binary search through history. You mark commits good or bad, and Git narrows down the first commit that introduced the problem. The key is to match the exact action in the prompt to the tool, command, or concept that performs that action directly. Here, A. git bisect is the only option that satisfies the scenario without adding unrelated behavior.
Why the other options are wrong
Option B does not match the requirement in the prompt. The correct answer is A because git bisect performs a binary search through history. You mark commits good or bad, and Git narrows down the first commit that introduced the problem.
Option C does not match the requirement in the prompt. The correct answer is A because git bisect performs a binary search through history. You mark commits good or bad, and Git narrows down the first commit that introduced the problem.
Option D does not match the requirement in the prompt. The correct answer is A because git bisect performs a binary search through history. You mark commits good or bad, and Git narrows down the first commit that introduced the problem.
Key idea: Debugging
Debugging questions test whether you can connect a common workflow problem to the right practical command, service, or concept. Instead of memorizing isolated definitions, look for the job being done in the prompt: staging a file, querying rows, running code, persisting container data, checking a service, or choosing the right cloud building block. The best answer usually names the simplest tool that performs that job directly. For Git Fundamentals, the safest study pattern is to read the scenario, underline the action verb, and eliminate answers that solve a different problem. If an option sounds related but changes the scope, adds risk, or describes a different layer of the stack, it is probably a distractor. After choosing an answer, explain why the other three fail; that habit builds the practical judgment these quizzes are meant to measure.
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