Determine the correct formula and date for the late finish for Activity 2002.

 Late Finish (LF) is calculated by adjusting the Late Start (LS) of the subsequent activity (2003) by the lag value.

 The formula, LS of 2003 - 1 day, aligns with CPM principles where the predecessor's LF must occur before the successor starts.

 The date calculation, considering lags and dependencies, results in 06 Oct 2021.

 References: PSP Study Guide, Section 2.2.4 – Relationships and Calculations, Appendix A – Sample Calculations for LF and LS relationships.