Which of the following is not a key decision when defining a project test strategy?

Comprehensive and Detailed Explanation From Exact Extract of ISTQB Certified Tester Advanced Level – Test Manager v3.0 syllabus:

In the AL Test Manager syllabus, defining the project test strategy/approach focuses onwhatto test andhowto test at a high level, which explicitly includes decisions such asthe selection of test levels,the selection of test types, andthe selection of test design techniquesas part of the approach definition and planning. Tool decisions are addressed undertest tools and automation planningand are not listed among the core strategy-defining decisions.