A project kickoff meeting is the standard and most effective way to introduce the team, establish rapport, and lay the foundation for collaboration-especially in virtual and cross-cultural environments. It also sets expectations, roles, communication norms, and provides clarity on the project's goals and direction.
According to the PMBOK Guide - Seventh Edition, "Kickoff meetings foster team alignment, encourage engagement, and ensure shared understanding of objectives." This is particularly critical when the team has never worked together before.
Options A and B may support team knowledge, but they lack real-time interaction. Option C (one-on-ones) may be helpful later, but does not replace a full-team kickoff for alignment and engagement.
References:
PMBOK Guide - Seventh Edition, Section 3.2: Kickoff and Team Formation
PMI Agile Practice Guide, Section on Agile Team Onboarding

When future performance is expected to continue at the same cost efficiency (CPI), the formula to calculate Estimate at Completion (EAC) is:
EAC = BAC / CPI
Step 1:
CPI = EV / AC = 145 / 170 # 0.8529
Step 2:
EAC = 285 / 0.8529 # 334 person/day
Thus, the correct estimate at completion is approximately 334 person/day.
Option B is the original BAC and does not reflect cost inefficiency.
Options C and D are incorrect based on the formula and data provided.
References:
PMBOK Guide - Sixth Edition, Section 7.4: Control Costs
Earned Value Management Formula Sheet (PMI)
-