The question asks when you deal with actions from assessment which is already conducted. So it is E and F https://pubs.opengroup.org/togaf-standard/adm-techniques/chap08.html#:~:text=Work%20these%20actions%20into%20Phase%20E%20and%20F%20Implementation%20and%20Migration%20Plan

Answer is B (Phase A) see https://pubs.opengroup.org/togaf-standard/adm/chap03.html#tag_03_03 ("Assess readiness for business transformation" in steps) Phase E and F only take inputs from the Readiness Assessment rather than conduct the assessment. (see https://pubs.opengroup.org/togaf-standard/adm-techniques/chap08.html#tag_08_01 - "Work these actions into Phase E and F Implementation and Migration Plan")

It should be G. Implementation Governance is where the actions resulting from a transformation readiness assessment are typically addressed. This phase focuses on ensuring that the implementation of the architecture proceeds in a controlled and managed manner. It involves monitoring, controlling, and managing changes to the architecture as it is implemented, including addressing any issues or risks identified through readiness assessments.

https://pubs.opengroup.org/togaf-standard/adm/chap09.html Confirm readiness and risk for business transformation (see 9.3.7 Confirm Readiness and Risk for Business Transformation) https://pubs.opengroup.org/togaf-standard/adm/chap10.html Prioritize the migration projects through the conduct of a cost/benefit assessment and risk validation (see 10.3.4 Prioritize the Migration Projects through the Conduct of a Cost/Benefit Assessment and Risk Validation )