The correct answer is A .
The main purpose of Enterprise Architecture is to guide effective change. TOGAF positions Enterprise Architecture as a discipline that supports business transformation by describing the current and future structure of the enterprise and by guiding the transition from the Baseline Architecture to the Target Architecture.
Enterprise Architecture helps an organization understand how its business, data, applications, and technology should evolve in order to meet business goals. It provides direction for change, supports better decision-making, and helps ensure that transformation is aligned with strategy.
Option A , Guiding effective change , is correct because it best summarizes the purpose of Enterprise Architecture in TOGAF.
Option B , Controlling the bigger changes , is incorrect because Enterprise Architecture is not simply about controlling large changes. It is about guiding, governing, and enabling effective change across the enterprise.
Option C , Governing the stakeholders , is incorrect because stakeholders are engaged, managed, and communicated with; they are not “governed” by Enterprise Architecture.
Option D , Taking major improvement decisions , is incorrect because Enterprise Architecture supports decision-making, but it is not itself the sole decision-making authority for major improvements.
[References:TOGAF Standard, Version 9.2, Part I: Introduction, Chapter 1: Introduction.TOGAF Standard, Version 9.2, Part II: Architecture Development Method, Chapter 4: Introduction to the ADM.TOGAF Standard, Version 9.2, Part VII: Architecture Capability Framework, Architecture Governance concepts.]
