Identify the missing word(s) in the following sentence: The definition of [?] is a control point, following delivery of a step-change in capability and benefits realization (tranche), at which a programme can be re-directed or closed.

In the Managing Successful Programmes (MSP) framework, a 'landing point' is the specific term for a formal control point at the end of a tranche. A tranche represents a distinct step in the programme that delivers a measurable step-change in capability and allows for benefits to be realized. At this landing point, the Sponsoring Group reviews the programme's progress, the updated Business Case, and the benefits achieved to make a formal decision on whether to continue to the next tranche, re-direct the programme's scope or approach, or close the programme down.

A. a project: A project is a temporary organization that delivers outputs as part of a programme; it is not a control point at the end of a tranche.
C. a programme: A programme is the entire temporary, flexible organization created to coordinate and oversee the implementation of a set of related projects and activities.
D. an incremental progression: This describes the iterative approach of a programme delivering benefits in stages, not a specific control point within the programme lifecycle.

AXELOS. (2020). Managing Successful Programmes (MSP) 5th Edition. TSO (The Stationery Office).

Glossary, page 288: "Landing point: A control point at the end of a tranche at which the sponsoring group can decide to redirect or close the programme."

Section 6.4.3, page 78: "The end of each tranche is a key decision point for the sponsoring group, sometimes referred to as a ‘landing point’. The sponsoring group reviews the updated business case and decides whether to authorize the next tranche, redirect the programme, or close it."