Explanation
The SAFe Lean-Agile Principle that includes the critical part of "delaying decisions to the last responsible moment" is "Assume variability; preserve options". This principle is based on theconcept of set-based design, which is a way of managing uncertainty and complexity in product development. Set-based design means exploring multiple possible solutions in parallel, eliminating inferior options over time, and converging on the best solution as more information becomes available. Delaying decisions to the last responsible moment means keeping multiple options open until enough data and feedback are gathered to make an informed decision, which reduces risk and waste. References: SAFe Lean-Agile Principles, SAFe Principle #4

Explanation
Lean thinking is the type of thinking that allows the customer to pull value from the producer. Lean thinking is a philosophy and a set of principles and practices that aim to eliminate waste and optimize value delivery. Pull is a concept that means that nothing is built or delivered until there is a demand for it from the customer or the next process. Pull helps reduce overproduction, inventory, and waiting, and ensures that only valuable work is done. References: Thriving in the Digital Age, SAFe Principle #1