A construction project manager is using a Gantt chart to track progress. Two critical path activities, 'foundation pour' (Activity A) and 'wall framing' (Activity B), have a finish-to-start relationship. Activity A is scheduled for 5 days, and Activity B for 8 days. Due to unexpected weather, Activity A is delayed by 2 days. What is the immediate impact on Activity B's earliest start date?

Question: A construction project manager is using a Gantt chart to track progress. Two critical path activities, 'foundation pour' (Activity A) and 'wall framing' (Activity B), have a finish-to-start relationship. Activity A is scheduled for 5 days, and Activity B for 8 days. Due to unexpected weather, Activity A is delayed by 2 days. What is the immediate impact on Activity B's earliest start date?

Answer options: ✅ Activity B's earliest start date is delayed by 2 days.

• Activity B's duration is reduced by 2 days to compensate.
• Activity B can start simultaneously with Activity A to catch up.
• The project's overall completion date remains unaffected.

Correct answer: Activity B's earliest start date is delayed by 2 days.

Explanation: Since Activity A and B have a finish-to-start relationship and Activity A is on the critical path, a 2-day delay in Activity A directly pushes back Activity B's earliest possible start date by 2 days. Activity B cannot start until A is complete, and critical path activities have no float to absorb delays.