The correct answer is C — Training in areas of weakness.

Velocity can be improved when the team removes skill-based bottlenecks. If some members struggle due to lack of knowledge or technical gaps, their productivity—and the team's velocity—will be impacted. Targeted training helps the team overcome these weaknesses and deliver more efficiently.

PMI Agile Practice Guide:

“Improving technical and team skills through training and mentoring increases team performance and agility. Learning is a continuous improvement activity that directly impacts delivery capacity.”

(PMI Agile Practice Guide, Section 6.4 – Developing People and Teams)

Mike Griffiths adds:

“Velocity is driven by team capabilities. When teams address their weakest areas—through training, pairing, or knowledge sharing—they improve quality and throughput.”

(PMI-ACP Exam Prep, Chapter 4 – Team Performance)

Other options:

A supports communication but doesn’t directly impact skill-based bottlenecks.

B helps with planning but not necessarily performance.

D describes the work cadence, not a practice that enhances velocity.

Answer: C

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