A team moved its large pull request reviews to one pass per file, and review depth is now consistent. Then a renamed field in a shared data model broke two consumer services, and no pass flagged it. What is the best change?

Answer: B — Add a separate integration pass for interfaces and cross-file data flow

Per-file passes catch local issues. Cross-file problems such as a changed field and its consumers need a separate integration pass focused on data flow between files. A single combined pass (a) brings back attention dilution. Speculation in each file pass (c) lacks the other files. A bigger window (d) doesn't give the pass a cross-file focus.