Which of the following can be inferred?

The only option that can be reliably inferred in a typical project chart/diagram context (e.g., a network diagram or dependency view) is a dependency relationship—specifically that Task B must finish before Task C can start (a Finish-to-Start relationship). In CompTIA Project+ objectives, dependency management is a core scheduling concept: identifying predecessors/successors and understanding how sequencing drives the schedule. Inference about task ordering is exactly what dependency visuals are designed to communicate.

The other options require information that is not inherently inferable without additional data. “Completed on time” (A) would require schedule baseline vs. forecast/critical path analysis. “Task D must be reworked” (B) would require quality/validation results or defect/issue information. “Over budget and behind schedule” (D) would require performance metrics such as EVM or cost/schedule variance and cannot be concluded solely from a dependency relationship.

So, the best inference is the sequencing rule: B must be completed before C begins, which is a fundamental scheduling/dependency concept emphasized in Project+ planning and schedule control practices.